USB to Serial RS232 converter cable adapter CH340 chip DB9 COM port

1. Use a crystal oscillator instead of a cheap ceramic oscillator. Stability is very good!

2. Easily realize the conversion between the computer USB interface and the universal serial port

3. Provide a fast channel for computers without serial ports

4. Turn the traditional serial device into a plug-and-play USB device

5. Easy to install, no external power supply and physical drive required

6. Suitable for computers or laptops with USB ports

7. Support USB1.0/1.1 specification, compatible with USB2.0 specification, support full-speed transfer mode 12MBPS

Absolutely compatible with all operating systems, including WIN7, VISTA XP, etc. (some products on the market do not support WIN7, buyers please note)

Installation instructions: [Free driver]

1. Install the CH340.EXE file in the running software
2. Connect the USB serial cable to the USB interface of the computer, and the driver will be installed automatically.
3. After the installation is successful, check whether the COM port appears in the device manager.

Features:
Easy installation, no external power supply and physical drive required
Suitable for computers or laptops with USB ports.
Support USB1.0/1.1 specification, compatible with USB2.0 specification, support full-speed transfer mode up to 1MBPS
Support WIN 7 2000, XP, Vista
(The latest version of the driver, support WIN7 32/64 bit, please ask customer service)

Product name: USB to serial cable (COM)

1: This product is mainly wholesale. It is a brand-new product chip 340. 

2: Product length: 0.9m~1m.  If you have special requirements, we can customize, generally for orders over 100 units can be customized according to your requirements.

3: Compatibility issues. The general serial port settings are compatible, but it is not guaranteed that all of them are compatible.

4: Delivery time for wholesale (over 100+ pieces) is from 7 to 10 working days.