The main control chip adopts WCH ch382l chip, which has strong compatibility and is suitable for long-time operation. Physical serial port with interrupt address, high stability. Standard interface external dual RS-232DB9 pin serial port, 25gb/s full duplex channel conforming to PCI Express, supporting plug and play. High speed and reliable transmission data transmission rate can be as high as 1000kbps, support RS-232 hardware flow control, and can stably and effectively control data flow loss. Supports Windows 10/7/8/ 98/xp.<br><br>Colour:green Material:metal, PCB<br><br>Package Contents: 1 x PCIe Card<br><br>Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.