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UGREEN 20201 USB to DB9 RS-232 male Adapter Cable - CR104 - 20210
JOD6.000
Tax included
20210
The UGREEN USB to DB9 RS-232 Adapter Cable (CR104 / 20210) lets you easily connect modern computers to legacy serial devices. Featuring a USB-A to DB9 male (RS-232) interface and stable chipset, it supports up to 115200 bps for routers, switches, POS systems, scanners, modems, GPS units, and industrial equipment. Compatible with Windows, macOS, and Linux.
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UGREEN USB to DB9 RS-232 Adapter Cable - CR104 - 20210
Connect modern computers to legacy serial devices quickly and reliably. The UGREEN CR104 (model 20210) bridges a computer’s USB-A port to a DB9 male RS-232 interface—ideal for routers/switches (console), POS terminals, barcode scanners, modems, GPS units, industrial machinery, test instruments, and more.
Key Features
- USB → Serial: Converts USB 2.0 to RS-232 (DB9 male).
- Stable chip & drivers: Designed for dependable, low-latency serial communications.
- Plug & Play: Works out of the box on most systems; drivers available if needed.
- Full signal support: TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI, GND (device-dependent).
- Robust build: Molded connectors with strain relief for everyday field use.
- Wide compatibility: Windows®, macOS®, Linux® (see details below).
Typical Uses
- Network gear console access (routers, switches, firewalls)
- POS systems, barcode scanners, receipt printers
- Industrial control & instrumentation (PLCs, CNC, lab equipment)
- Modems, GPS receivers, microcontroller boards using RS-232
- Terminal emulation with PuTTY, Tera Term, Minicom, etc.
Technical Specifications
| Brand | UGREEN |
| Series / Model | CR104 / 20210 |
| Function | USB to RS-232 serial adapter |
| USB Connector | USB-A male (USB 2.0, backward compatible with USB 1.1/3.x ports) |
| Serial Connector | DB9 male (RS-232, 9-pin) |
| Cable Length | 1 m, 1.5 m, 2 m, 3 m |
| Supported Signals | TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI, GND (as required by device) |
| Baud Rate | Up to 115,200 bps (higher rates may depend on OS/driver/device) |
| Power | Bus-powered from USB port (no external power required) |
| OS Compatibility | Windows 7/8/10/11, macOS, Linux (driver support may be required on some systems) |
| Build | Molded connector shells; integrated strain relief |
| Operating Environment | Indoor, standard office/industrial bench use |
| Compliance | RoHS; USB-IF class compliant (chipset-dependent) |
| Color | Black |
| SKU / EAN | 20210 (CR104) |
| Warranty | Manufacturer’s limited warranty (terms vary by region) |
What’s in the Box
- UGREEN USB to DB9 RS-232 Adapter Cable (CR104 / 20210) – 1 m
- Quick start information (driver link/QR as applicable)
Compatibility Notes
- Most systems install a standard USB-to-serial driver automatically; if not, install the driver from the manufacturer.
- Console cables for certain network devices may require a separate RJ45-to-DB9 lead; this adapter provides the USB↔DB9 conversion.
- Actual maximum baud rate and handshake support can depend on the connected device, driver, and terminal software.
Why Choose UGREEN CR104 / 20210?
- Reliable connection for mission-critical serial workflows
- Portable, durable, and easy to use in the field
- Excellent value for enabling legacy RS-232 on modern laptops/desktops
Disclaimer: Some specifications (e.g., maximum baud rate, signal line usage) vary with device, driver, and OS. For best results, use up-to-date drivers and avoid tight bends near connectors.
Data sheet
- Model
- CR104
- Color
- Black
- Brand
- UGREEN
Specific References
- EAN13
- 20210
- MPN
- 20210
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