{"product_id":"ugreen-3m-10ft-usb-to-rs232-db9-serial-male-to-male-converter-adapter-cable-with-ftdi-chipset-gold-plated-driverless-for-win8-1-8-compatible-with-8-7-vista-xp-2000-and-mac-os-x-10-6-and-above-20223","title":"UGREEN CR104 USB-A to RS232 DB9 Adapter with PL2303, 3m (20223)","description":"\u003cstyle\u003e\/* UGREEN India product description layout *\/\n.ugd-story { --ugd-acc: #169b45; --ugd-ink: #14181c; --ugd-text: #4a5258; --ugd-line: #e3e6e8; --ugd-soft: #f4f5f6; color: var(--ugd-ink); font: 16px \/ 1.7 -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Arial, sans-serif; width: 100%; max-width: 1200px; margin: 0px auto; container-type: inline-size; text-align: left; overflow-wrap: anywhere; }\n.ugd-story * { box-sizing: border-box; }\n.ugd-story :is(h2, h3, h4, p, figure, ul, ol, dl, dd) { margin: 0px; padding: 0px; }\n.ugd-story :is(h2, h3, h4) { color: var(--ugd-ink); font-weight: 700; letter-spacing: -0.02em; text-transform: none; }\n.ugd-story h2 { font-size: clamp(26px, 4.2cqi, 42px); 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}\n.ugd-story .ugd-trust li { color: rgb(255, 255, 255); font-size: 14px; line-height: 1.45; }\n.ugd-story .ugd-trust b { display: block; color: rgb(255, 255, 255); font-size: 15px; }\n.ugd-story .ugd-trust span { color: rgb(185, 194, 199); }\n@container (max-width: 700px) {\n.ugd-story .ugd-hero, .ugd-story .ugd-feature, .ugd-story .ugd-box { grid-template-columns: 1fr; }\n.ugd-story .ugd-hero figure { order: -1; }\n.ugd-story .ugd-feature.ugd-rev figure { order: 0; }\n.ugd-story .ugd-stats { grid-template-columns: 1fr 1fr; }\n.ugd-story .ugd-stats div:nth-child(3) { border-left: 0px; }\n.ugd-story .ugd-stats div:nth-child(n+3) { border-top: 1px solid var(--ugd-line); }\n.ugd-story .ugd-tests { grid-template-columns: 1fr 1fr; }\n.ugd-story .ugd-uses { grid-template-columns: 1fr 1fr; }\n.ugd-story .ugd-uses figure:last-child { grid-column: 1 \/ -1; }\n.ugd-story .ugd-specs { grid-template-columns: 1fr; }\n.ugd-story .ugd-specs div:nth-child(2n+1) { padding-right: 0px; }\n.ugd-story .ugd-trust { grid-template-columns: 1fr 1fr; }\n}\n@container (max-width: 380px) {\n.ugd-story .ugd-box ol { columns: 1; }\n}\n.ugd-story .ugd-feature.ugd-noimg { grid-template-columns: 1fr; max-width: 780px; }\n.ugd-story .ugd-stats.ugd-s2 { grid-template-columns: 1fr 1fr; }\n.ugd-story .ugd-uses figcaption, .ugd-story figure figcaption { color: var(--ugd-ink); }\n.ugd-story .ugd-box.ugd-noimg { grid-template-columns: 1fr; }\n.product-details rte-formatter \u003e .ugd-wide { max-width: none !important; width: 100% !important; }\n.product-details rte-formatter \u003e .ugd-story.ugd-wide { max-width: 1200px !important; }\n.ugd-story ul.ugd-nav,.ugd-story ul.ugd-chips,.ugd-story ul.ugd-trust{list-style:none!important;padding-left:0!important;margin-left:0!important}.ugd-story ul.ugd-nav li,.ugd-story ul.ugd-chips li,.ugd-story ul.ugd-trust li{list-style:none!important}.ugd-story ul.ugd-nav li::before,.ugd-story ul.ugd-chips li::before,.ugd-story ul.ugd-trust li::before,.ugd-story ul.ugd-nav li::marker,.ugd-story ul.ugd-chips li::marker{content:none!important;display:none!important}\n\u003c\/style\u003e\u003cdiv class=\"ugd-story ugd-wide\"\u003e\n\u003cheader class=\"ugd-hero\"\u003e\u003cdiv\u003e\n\u003cspan class=\"ugd-eyebrow\"\u003eUSB-to-serial connectivity · SKU guide\u003c\/span\u003e\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis is a protocol-conversion cable, not a passive plug adapter. The USB side talks to the computer; the PL2303 converts that data to RS232 serial signalling; the DB9 male end mates with a compatible female equipment port. The application must then use the correct COM port, baud rate, data bits, parity, stop bits and flow-control settings.\u003c\/p\u003e\n\u003cul class=\"ugd-chips\"\u003e\n\u003cli\u003ecable length\u003c\/li\u003e\n\u003cli\u003eUSB-to-serial controller family\u003c\/li\u003e\n\u003cli\u003eequipment-side connector\u003c\/li\u003e\n\u003cli\u003elisted serial data-rate ceiling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/header\u003e\u003cdiv class=\"ugd-stats\"\u003e\n\u003cdiv\u003e\n\u003cb\u003e3m\u003c\/b\u003e\u003cspan\u003eCable length\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eUSB Type-A male\u003c\/b\u003e\u003cspan\u003eHost connector\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eUSB 2.0\u003c\/b\u003e\u003cspan\u003eUSB interface\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eTrue RS232\u003c\/b\u003e\u003cspan\u003eSerial standard\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cnav\u003e\u003cul class=\"ugd-nav\"\u003e\n\u003cli\u003e\u003ca href=\"#ugd-features\"\u003eFeatures\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#ugd-specs\"\u003eSpecifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#ugd-faqs\"\u003eFAQs\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/nav\u003e\u003cdiv class=\"ugd-section\" id=\"ugd-features\"\u003e\n\u003cdiv class=\"ugd-head\"\u003e\n\u003cspan class=\"ugd-eyebrow\"\u003eFeatures\u003c\/span\u003e\u003ch3\u003eWhat it does well.\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ugd-feature ugd-noimg\"\u003e\u003cdiv\u003e\n\u003ch4\u003eKey features\u003c\/h4\u003e\n\u003cp\u003eThese are the functions that define this SKU. They are intentionally separated from performance assumptions so the connector, protocol and operating role stay clear.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUSB-A male host plug for a computer with a standard USB Type-A port.\u003c\/li\u003e\n\u003cli\u003eDB9 male RS232 connector with thumb screws for a secure equipment-side connection.\u003c\/li\u003e\n\u003cli\u003eProlific PL2303 controller presents a virtual serial COM device to the operating system.\u003c\/li\u003e\n\u003cli\u003eUSB 2.0 host interface with listed serial transfer support up to 1Mbps under a compatible setup.\u003c\/li\u003e\n\u003cli\u003eStandard nine-signal DB9 assignment covers DCD, RXD, TXD, DTR, ground, DSR, RTS, CTS and RI.\u003c\/li\u003e\n\u003cli\u003eCable shielding and moulded strain relief support dependable fixed-desk and service-kit use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"ugd-feature ugd-rev ugd-noimg\"\u003e\u003cdiv\u003e\n\u003ch4\u003ePerformance and planning\u003c\/h4\u003e\n\u003cp\u003eThis guide separates the physical connector, protocol, speed ceiling and host requirements so that a familiar-looking plug is not mistaken for guaranteed compatibility. Performance examples are planning references, not promises: the source device, destination device, controller, operating system, cable chain, file system and workload can all become the limiting factor.\u003c\/p\u003e\n\u003cp\u003eThe 3m length gives technicians working reach without changing the protocol. It does not increase the baud rate accepted by the connected equipment, and a longer physical run cannot correct electrical noise, poor grounding or an incorrect serial configuration.\u003c\/p\u003e\n\u003cp\u003eThe listed 1Mbps figure is a controller ceiling, not the setting to select automatically. Many routers, PLCs, modems, instruments and legacy peripherals use much lower rates such as 9600 or 115200 baud. Always follow the equipment manual.\u003c\/p\u003e\n\u003cp\u003eLarge file-copy benchmarks are irrelevant to RS232. Reliability is determined by correct framing, wiring, driver support, signal levels and the application maintaining the COM-port session.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"ugd-feature ugd-noimg\"\u003e\u003cdiv\u003e\n\u003ch4\u003eUse scenarios\u003c\/h4\u003e\n\u003cp\u003eThe following examples show realistic ways to use the product while retaining the compatibility and safety checks described elsewhere in this guide.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eIndustrial service.\u003c\/b\u003e Connect maintenance software on a USB-A laptop to a compatible PLC, controller or instrument that exposes true RS232 through DB9 female.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eNetwork equipment.\u003c\/b\u003e Reach a supported router, managed switch or modem only when its console\/service port is genuine DB9 RS232—not an RJ45 or USB console port.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eLegacy peripherals.\u003c\/b\u003e Operate compatible serial printers, scanners, GPS receivers, POS equipment or other DB9 RS232 devices after confirming their wiring and software requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eLab and field kits.\u003c\/b\u003e Keep the 3m cable with the correct PL2303 driver package and the target-device settings for repeatable commissioning or diagnostics.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"ugd-box ugd-noimg\"\u003e\u003cdiv\u003e\n\u003ch4\u003eSetup and usability guidance\u003c\/h4\u003e\n\u003cp\u003eUse this sequence as a practical installation checklist. If the connected equipment manual gives a stricter instruction, follow the equipment manufacturer’s procedure.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eRead the target equipment manual and confirm that its port is true RS232, DB9 female and compatible with a straight-through DB9 male adapter.\u003c\/li\u003e\n\u003cli\u003eInstall a supported PL2303 driver if the operating system does not load one automatically; restart the application or computer if the driver installer requests it.\u003c\/li\u003e\n\u003cli\u003eConnect the USB-A plug directly to the computer where practical, then verify that a new COM or tty device appears in the operating system.\u003c\/li\u003e\n\u003cli\u003eWith the equipment safely powered as its manufacturer directs, seat the DB9 male connector and tighten both thumb screws evenly by hand.\u003c\/li\u003e\n\u003cli\u003eOpen the serial application and select the newly created port. Enter the equipment-specified baud rate, data bits, parity, stop bits and flow-control mode.\u003c\/li\u003e\n\u003cli\u003eBegin with a low-risk read or status command. If communication fails, stop and recheck pinout and settings rather than rapidly changing every value.\u003c\/li\u003e\n\u003cli\u003eClose the serial session before unplugging. Loosen the screws and pull by the connector shell, not by the cable.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"ugd-box ugd-noimg\"\u003e\u003cdiv\u003e\n\u003ch4\u003eCompatible devices and systems\u003c\/h4\u003e\n\u003cp\u003eCompatibility is conditional on physical connector, electrical or storage protocol, host support, software and the complete system design. A matching plug alone is not enough.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHost: computer with USB-A and an operating system for which a suitable PL2303 driver is available.\u003c\/li\u003e\n\u003cli\u003eSystems represented in the gallery: Windows, macOS and Linux; edition, kernel and security-policy support still depend on the current driver.\u003c\/li\u003e\n\u003cli\u003eEquipment connector: DB9 female with true RS232 electrical signalling and compatible signal assignment.\u003c\/li\u003e\n\u003cli\u003eTypical categories include PLCs, network equipment, modems, printers, measurement devices and selected GPS\/POS equipment only when their manuals specify RS232.\u003c\/li\u003e\n\u003cli\u003eApplications must support serial-port selection and the framing\/flow-control parameters required by the equipment.\u003c\/li\u003e\n\u003cli\u003eVirtual machines, restricted corporate systems and USB hubs may require administrator approval or explicit USB-device pass-through.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"ugd-feature ugd-rev ugd-noimg\"\u003e\u003cdiv\u003e\n\u003ch4\u003eWhat this product does\u003c\/h4\u003e\n\u003cp\u003eUse this product for the narrow functions below. Keeping the role specific makes troubleshooting easier and avoids buying it for an unrelated conversion task.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConverts USB host data to RS232-level serial communication through the PL2303 controller.\u003c\/li\u003e\n\u003cli\u003eCreates a virtual serial device that compatible applications can open as a COM or tty port.\u003c\/li\u003e\n\u003cli\u003eProvides a DB9 male connection and hardware handshaking pins for equipment that uses them.\u003c\/li\u003e\n\u003cli\u003eProvides 3m of integrated cable reach between the USB computer and serial equipment.\u003c\/li\u003e\n\u003cli\u003eDraws operating power for the adapter electronics from the USB host connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"ugd-feature ugd-noimg\"\u003e\u003cdiv\u003e\n\u003ch4\u003eWhat this product does not do\u003c\/h4\u003e\n\u003cp\u003eThese exclusions are as important as the feature list. They distinguish this model from converters, powered accessories and visually similar products.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eImportant:\u003c\/b\u003e If your required function appears in this exclusion list, choose a purpose-built product for that function rather than adding unverified adapters.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIt does not convert TTL-level UART, RS422 or RS485 signalling to RS232.\u003c\/li\u003e\n\u003cli\u003eIt does not convert Ethernet, RJ45 console, parallel-printer or video signals.\u003c\/li\u003e\n\u003cli\u003eIt does not guarantee that a DB9 connector has the required wiring; connector shape alone is insufficient.\u003c\/li\u003e\n\u003cli\u003eIt does not automatically create a null-modem crossover. A separate correctly wired adapter may be required by DTE-to-DTE equipment.\u003c\/li\u003e\n\u003cli\u003eIt does not supply operating power to the connected PLC, modem, printer or instrument.\u003c\/li\u003e\n\u003cli\u003eIt does not remove the need for a compatible driver, serial application and correct port settings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"ugd-feature ugd-rev ugd-noimg\"\u003e\u003cdiv\u003e\n\u003ch4\u003eWhat to do\u003c\/h4\u003e\n\u003cp\u003eGood installation and handling habits protect data, equipment ports and connection reliability.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMatch SKU, PL2303 controller, USB-A host plug, DB9 male equipment plug and cable length before ordering.\u003c\/li\u003e\n\u003cli\u003eDownload drivers only from the operating-system, controller or trusted product-support source appropriate to the host.\u003c\/li\u003e\n\u003cli\u003eRecord the COM-port name and complete serial settings for each target device.\u003c\/li\u003e\n\u003cli\u003eTighten both DB9 screws gently so vibration cannot loosen one side of the connector.\u003c\/li\u003e\n\u003cli\u003eUse strain relief and route the cable away from high-current switching equipment where possible.\u003c\/li\u003e\n\u003cli\u003eTest with the equipment manufacturer’s known-good command or utility before blaming the cable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"ugd-feature ugd-noimg\"\u003e\u003cdiv\u003e\n\u003ch4\u003eWhat not to do\u003c\/h4\u003e\n\u003cp\u003eAvoid these common mistakes even when the connectors appear to fit.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDo not connect the DB9 end to TTL UART, RS422, RS485 or an unknown port simply because the connector fits.\u003c\/li\u003e\n\u003cli\u003eDo not assume “plug and play” means every operating system already contains the correct PL2303 driver.\u003c\/li\u003e\n\u003cli\u003eDo not select an arbitrary baud rate or disable flow control without checking the equipment documentation.\u003c\/li\u003e\n\u003cli\u003eDo not use an RJ45 adapter and assume a network console pinout will become compatible.\u003c\/li\u003e\n\u003cli\u003eDo not pull, twist or suspend equipment by the cable, and do not overtighten the DB9 screws.\u003c\/li\u003e\n\u003cli\u003eDo not disconnect while firmware, configuration or transactional data is actively being written.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"ugd-feature ugd-rev ugd-noimg\"\u003e\u003cdiv\u003e\n\u003ch4\u003eWarnings and limitations\u003c\/h4\u003e\n\u003cp\u003eReview every point before connecting valuable equipment or irreplaceable data. Stop use if the setup does not match the documented interface.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eStop and recheck:\u003c\/b\u003e Disconnect if connectors are forced, hardware becomes abnormally hot, data becomes unstable or the electrical\/protocol role is uncertain.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncorrect serial voltage, wiring or handshake configuration can prevent communication and may damage sensitive equipment. Confirm the electrical standard first.\u003c\/li\u003e\n\u003cli\u003eThe attached equipment needs its own appropriate power source; USB bus power operates the adapter electronics only.\u003c\/li\u003e\n\u003cli\u003eDriver availability can change with operating-system releases. Confirm support for the host version, architecture and security policy.\u003c\/li\u003e\n\u003cli\u003eA COM port appearing proves only that the USB adapter was detected. It does not prove that the remote equipment, pinout or application settings are correct.\u003c\/li\u003e\n\u003cli\u003eThe listed up-to-1Mbps rate depends on compatible hardware and settings. Use the rate specified by the connected equipment.\u003c\/li\u003e\n\u003cli\u003eFor SKU 20223, use the PL2303 identity shown by the current record and gallery; do not select an FTDI-only driver based on legacy address wording.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"ugd-box ugd-noimg\"\u003e\u003cdiv\u003e\n\u003ch4\u003eCheck before ordering\u003c\/h4\u003e\n\u003cp\u003eA minute spent checking the complete signal path is more useful than choosing by connector shape or headline speed alone.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYou need the 3m length and SKU 20223.\u003c\/li\u003e\n\u003cli\u003eThe computer has USB-A, or you have a proven data-capable host adapter.\u003c\/li\u003e\n\u003cli\u003eThe target port is DB9 female and explicitly documented as true RS232.\u003c\/li\u003e\n\u003cli\u003eThe target wiring is compatible with this straight-through DB9 male assignment, or you have the correct crossover accessory.\u003c\/li\u003e\n\u003cli\u003eA supported PL2303 driver is available for the operating-system version.\u003c\/li\u003e\n\u003cli\u003eYou know the baud rate, data bits, parity, stop bits and flow-control requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"ugd-feature ugd-noimg\"\u003e\u003cdiv\u003e\n\u003ch4\u003eCare and troubleshooting\u003c\/h4\u003e\n\u003cp\u003eStart with the simplest known-good path, change one variable at a time and protect important data before testing storage or configuration workflows.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKeep the DB9 contacts clean and dry, protect the USB plug in a service pouch and coil the cable loosely rather than sharply folding it.\u003c\/li\u003e\n\u003cli\u003eIf the COM port disappears, reconnect directly to the host, inspect Device Manager\/system logs and verify the driver before changing serial parameters.\u003c\/li\u003e\n\u003cli\u003eIf the COM port remains visible but there is no response, check equipment power, DB9 gender, straight-through versus null-modem wiring, baud\/framing and application access.\u003c\/li\u003e\n\u003cli\u003eIf characters are corrupted, confirm that both ends use identical baud, data bits, parity and stop bits, then reduce the rate if the equipment manual permits.\u003c\/li\u003e\n\u003cli\u003eIf hardware flow control is enabled, confirm that the target actually uses RTS\/CTS or the required handshake lines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ugd-section\" id=\"ugd-specs\"\u003e\n\u003cdiv class=\"ugd-head\"\u003e\n\u003cspan class=\"ugd-eyebrow\"\u003eSpecifications\u003c\/span\u003e\u003ch3\u003eAt a glance.\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdl class=\"ugd-specs\"\u003e\n\u003cdiv\u003e\n\u003cdt\u003eProduct\u003c\/dt\u003e\n\u003cdd\u003eUGREEN CR104 USB-A to RS232 serial adapter\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eSKU\u003c\/dt\u003e\n\u003cdd\u003e20223\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eCable length\u003c\/dt\u003e\n\u003cdd\u003e3m\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eHost connector\u003c\/dt\u003e\n\u003cdd\u003eUSB Type-A male\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eEquipment connector\u003c\/dt\u003e\n\u003cdd\u003eDB9 male with thumb screws\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eUSB interface\u003c\/dt\u003e\n\u003cdd\u003eUSB 2.0\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eSerial standard\u003c\/dt\u003e\n\u003cdd\u003eTrue RS232\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eController\u003c\/dt\u003e\n\u003cdd\u003eProlific PL2303 family\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eListed serial rate\u003c\/dt\u003e\n\u003cdd\u003eUp to 1Mbps in a compatible configuration\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eDB9 signals\u003c\/dt\u003e\n\u003cdd\u003e1 DCD; 2 RXD; 3 TXD; 4 DTR; 5 GND; 6 DSR; 7 RTS; 8 CTS; 9 RI\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eDriver model\u003c\/dt\u003e\n\u003cdd\u003eVirtual COM\/tty device; driver may be required\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eOperating-system scope\u003c\/dt\u003e\n\u003cdd\u003eWindows, macOS and Linux with suitable PL2303 support\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eAdapter power\u003c\/dt\u003e\n\u003cdd\u003eUSB bus powered\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eTarget-device power\u003c\/dt\u003e\n\u003cdd\u003eNot supplied by this adapter\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eSignal conversion exclusions\u003c\/dt\u003e\n\u003cdd\u003eNot TTL UART, RS422, RS485, Ethernet or parallel\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdt\u003eIn the box\u003c\/dt\u003e\n\u003cdd\u003e1 × UGREEN 20223 3m USB-A to DB9 male RS232 adapter cable\u003cbr\u003ePrinted material, packaging and driver-delivery method can vary; use the current trusted support source for software.\u003cbr\u003eA DB9 null-modem adapter, USB-C host adapter and power supply for serial equipment are not identified as included.\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\n\u003cp class=\"ugd-note\"\u003eThe table consolidates the model facts and deliberately states conditional performance where the result depends on the wider system.\u003c\/p\u003e\n\u003cp class=\"ugd-note\"\u003ePackage contents below reflect the current product record and gallery presentation. Accessories shown only as connected examples are not automatically included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ugd-section\" id=\"ugd-faqs\"\u003e\n\u003cdiv class=\"ugd-head\"\u003e\n\u003cspan class=\"ugd-eyebrow\"\u003eFAQs\u003c\/span\u003e\u003ch3\u003eQuestions buyers ask.\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this cable create a serial COM port?\u003c\/summary\u003e\u003cp\u003eYes. With a suitable PL2303 driver, the operating system exposes the adapter as a virtual COM or tty device that compatible serial software can open.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs this an FTDI adapter?\u003c\/summary\u003e\u003cp\u003eNo. this SKU 20223 record and gallery identify PL2303. Legacy wording in the page address should not be used to choose the driver.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWill it work with a USB-C-only laptop?\u003c\/summary\u003e\u003cp\u003eNot directly. The host plug is USB-A. A proven USB-C-to-USB-A data adapter or hub may work, but driver and USB-device pass-through must still be supported.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan it connect to RS485 or RS422 equipment?\u003c\/summary\u003e\u003cp\u003eNo. Those are different electrical standards. Use a converter specifically designed for the required RS422 or RS485 interface.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan it connect to a TTL UART header?\u003c\/summary\u003e\u003cp\u003eNo. TTL UART signal levels differ from RS232 and may be damaged by the wrong interface. Use a correctly rated TTL USB adapter.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes it work with every DB9 female port?\u003c\/summary\u003e\u003cp\u003eNo. The port must be true RS232 and must use compatible pinout, DTE\/DCE orientation and handshake requirements.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs a driver required?\u003c\/summary\u003e\u003cp\u003ePossibly. Some systems can load a suitable driver automatically, while others require installation. Confirm support for the host version and PL2303 controller.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy is the COM port visible but the device does not respond?\u003c\/summary\u003e\u003cp\u003eDetection confirms only the USB side. Recheck equipment power, DB9 wiring, null-modem requirements, port ownership and all serial framing\/flow-control settings.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes the adapter power the serial device?\u003c\/summary\u003e\u003cp\u003eNo. USB powers the conversion electronics. The connected modem, controller, printer or instrument needs its own specified power source.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use it for an RJ45 network-console port?\u003c\/summary\u003e\u003cp\u003eNo, not directly. RJ45 console wiring and connectors are different; choose an console cable documented for that equipment.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs 1Mbps guaranteed?\u003c\/summary\u003e\u003cp\u003eNo. It is the listed ceiling. The equipment and application usually dictate a lower baud rate, and the whole system must support the selected setting.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat should I check before disconnecting?\u003c\/summary\u003e\u003cp\u003eClose the serial session and confirm that no configuration, firmware or transaction is being written. Then loosen both screws and remove the connector by its shell.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cscript\u003e(function(){function m(){var s=document.querySelector(\".ugd-story,.ht-story,.ava-story\");if(!s)return;var d=s.closest(\".product-block--description\");var a=document.querySelector(\"article.product--outer\");if(!d||!a||d.closest(\".ugd-fullwrap\"))return;var w=document.createElement(\"div\");w.className=\"ugd-fullwrap\";w.style.cssText=\"max-width:1200px;margin:40px auto 0;padding:0 24px;box-sizing:border-box;width:100%\";w.appendChild(d);a.parentNode.insertBefore(w,a.nextSibling);}if(document.readyState!==\"loading\")m();else document.addEventListener(\"DOMContentLoaded\",m);})();\u003c\/script\u003e","brand":"UGREEN","offers":[{"title":"Default Title","offer_id":43331214377059,"sku":"20223","price":1809.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0581\/3780\/4899\/files\/61N0K3md5nL._SL1500.jpg?v=1763833719","url":"https:\/\/ugreenindia.com\/hi\/products\/ugreen-3m-10ft-usb-to-rs232-db9-serial-male-to-male-converter-adapter-cable-with-ftdi-chipset-gold-plated-driverless-for-win8-1-8-compatible-with-8-7-vista-xp-2000-and-mac-os-x-10-6-and-above-20223","provider":"Ugreen India","version":"1.0","type":"link"}