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The main management chip adopts WCH ch382l chip, which has stable compatibility and is acceptable for long-time operation. Physical serial port with interrupt address, excessive stability. Standard interface exterior dual RS-232DB9 pin serial port, 25gb/s complete duplex channel conforming to PCI Express, supporting plug and play. High speed and loyal transmission information transmission charge could be as excessive as 1000kbps, assist RS-232 hardware circulation control, and can stably and efficiently leadership news flow loss. Supports Windows 10/7/8/ 98/xp. Colour:green Material:metal, PCB Package Contents: 1 x PCIe Card Only the above package content, different merchandise usually are not included. Note: Light capturing and various displays could cause the colour of the object within the photograph considerably diversified from the real thing. The size allowed error is +/- 1-3cm.