The UGREEN 20201 1.5m USB 2.0 to RS232 DB9 Female Serial Adapter Cable connects compatible USB-A computers with legacy RS232 communication devices. Featuring a Prolific PL2303-family chipset and serial data transfer up to 1Mbps, it provides a convenient interface for supported POS terminals, barcode scanners, modems and industrial equipment.
Top Highlights
- USB to RS232Connect serial equipment.
- PL2303 ChipsetVirtual COM port support.
- Up to 1MbpsSerial data communication.
- 1.5m LengthConvenient device placement.
About the UGREEN 20201
The UGREEN 20201 is a USB 2.0 Type-A Male to DB9 Female RS232 Serial Adapter Cable designed to connect compatible computers with legacy serial communication equipment. It uses a Prolific PL2303-family chipset to provide an RS232 interface through a virtual COM port and supports serial transfer rates up to 1Mbps. Its 1.5-meter cable and USB-powered construction make it useful for supported POS systems, communication devices and technical applications where traditional serial connectivity is required.
Design & Performance
USB 2.0 to RS232 Serial Conversion
The UGREEN 20201 converts a computer’s USB Type-A connection into an RS232 serial communication interface. This allows compatible computers without built-in serial ports to communicate with supported DB9 RS232 equipment through suitable software.
The adapter supports USB 2.0 connectivity on the computer side. Its serial interface must be connected to genuine RS232 equipment with compatible connector wiring and communication settings.
Prolific PL2303 Chipset and COM Port Support
Equipped with a Prolific PL2303-family USB-to-serial bridge, the UGREEN 20201 enables communication through a virtual serial port. Once a compatible driver is installed and the adapter is recognized, supported applications can access the assigned COM or serial port.
Driver compatibility depends on the chipset revision and operating system. Users should verify current driver support before purchasing the adapter for modern Windows, macOS or Linux systems.
Serial Data Transfer up to 1Mbps
The UGREEN 20201 supports manufacturer-stated serial data transfer speeds up to 1Mbps, providing a suitable connection for compatible serial communication and device configuration tasks. It can be used with equipment that requires supported RS232 data transmission.
Actual communication speed depends on the connected device and its configured baud rate. Both devices must use matching serial settings, including data bits, parity, stop bits and flow control.
DB9 Female Connector for Serial Equipment
The adapter features a USB Type-A male connector for the computer and a DB9 female connector for compatible RS232 equipment. This design supports direct connection to devices with suitable male DB9 serial interfaces or correctly wired serial cables.
Connector shape alone does not guarantee compatibility. Users must confirm RS232 signalling, pin assignments and any straight-through or null-modem wiring requirements before connecting equipment.
1.5-Meter USB-Powered Cable Design
The 1.5-meter cable provides convenient reach between a computer and nearby serial equipment. It is useful for office desks, POS workstations, technical benches and supported equipment configuration environments.
The adapter receives operating power through its USB connection, eliminating the need for a separate external power adapter. Its nickel-plated connector construction is intended for regular wired connectivity.
Practical Legacy Device Connectivity
The UGREEN 20201 is suitable for connecting supported RS232 serial modems, barcode scanners, POS devices, communication equipment and compatible industrial instruments to USB-equipped computers. It can help maintain access to older equipment that relies on traditional serial communication.
Successful operation requires compatible device drivers, serial port settings and application software. The adapter does not convert RS485, RS422, TTL serial, CAN bus or VGA video signals.
Who It’s For
IT Technicians: Configure compatible RS232 communication equipment. POS Operators: Connect supported serial POS peripherals. Industrial Users: Maintain compatible legacy serial devices. Network Technicians: Access supported RS232 configuration interfaces. Office Users: Connect compatible serial modems and other DB9 equipment. System Integrators: Add a virtual serial port to supported USB-A computers.
Connect compatible legacy serial devices through USB 2.0 with PL2303-based COM port support, up to 1Mbps serial communication and a practical 1.5-meter cable.
| Product Specifications | |
|---|---|
| Tech Specs | Product Type |
| Cable Length | 1.5 Meter |
| Connector A | USB Type-A Male |
| Connector B | DB9 Female (9-Pin Serial) |
| USB Standard | USB 2.0 |
| Serial Interface | RS232 |
| Chipset | Prolific PL2303 Family |
| Maximum Data Transfer | Up to 1Mbps |
| Power Supply | USB Bus-Powered |
| Driver | Compatible Driver May Be Required |
| Operating System | Legacy Windows, macOS 10.6+, Linux (driver-dependent) |
| Connector Finish | Nickel-Plated |
| Compatible Devices | Supported RS232 Modems, POS Devices, Barcode Scanners and Industrial Equipment |
| Cable Function | USB to RS232 Serial Conversion |
| Communication Interface | Virtual COM / Serial Port |
| Warranty Information | |
| Warranty | N/A |
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