Description
The UGREEN CR104 USB-A to DB9 RS-232 Adapter Cable is a reliable solution for connecting legacy serial devices to modern computers through a USB port. Featuring a USB Type-A male connector and a 9-pin DB9 RS-232 serial connector, it is ideal for industrial equipment, barcode scanners, receipt printers, PLC/CNC machines, modems, and cash registers. Powered directly through the USB port, it requires no external power supply. Equipped with the Prolific PL2303 chipset, it creates a virtual COM port for stable communication, supports data transfer speeds up to 1Mbps, and offers broad compatibility with Windows, macOS, and Linux.
Key Features
-
USB-A male to DB9 RS-232 (9-pin) male adapter cable.
- Connects legacy serial devices to modern computers without a serial port.
- Powered directly via the USB port with no external power adapter required.
- Built with the Prolific PL2303 chipset for reliable virtual COM port support.
- Supports serial communication speeds up to 1Mbps.
- Triple-layer shielding minimizes signal interference and improves transmission stability.
- Tinned copper conductors reduce signal loss and enhance durability.
- Plug-and-play installation on supported operating systems.
- Compatible with Windows, macOS, and Linux.
- Ideal for barcode scanners, receipt printers, label printers, CNC and PLC controllers, serial modems, cash registers, and other RS-232 devices.
- Standard cable length of 1.5 meters for flexible installation.
Technical Specifications
| Specification |
Details |
| Brand |
UGREEN |
| Model |
CR104 |
| Product Type |
USB to RS-232 Adapter Cable |
| Connector 1 |
USB-A Male |
| Connector 2 |
DB9 (9-Pin) RS-232 Male |
| Chipset |
Prolific PL2303 |
| Maximum Data Rate |
Up to 1Mbps |
| Cable Length |
1.5m |
| Conductors |
Tinned Copper |
| Shielding |
Triple-Layer Shielding |
| Power Source |
USB Bus Powered |
| Driver Support |
Virtual COM Port |
| Operating Systems |
Windows XP–11, macOS 10.6+, Linux 2.4+ |
Supported Devices
- Barcode scanners
- Label printers
- Receipt printers
- CNC machines
- PLC controllers
- Serial modems
- Cash registers
- Other RS-232 serial equipment
