Features 1、PCI-Express rate 2.5Gb/s full duplex channel. 2、Support plug and play. 3、Serial interface RS-232. 4、Compatible with standard 16c550 UART and 256-byte transmit and receive FIFO. 5、High-speed data transfer rate of up to 250k / sec. Specification Features: PCI-Express rate 2.5Gb/s full duplex channel. Serial interface RS-232. Compatible with standard 16c550 UART and 256-byte transmit and receive FIFO. High-speed data transfer rate of up to 250k / sec. Support RS-232 hardware flow control. Specification: Type: Adapter Card Material: PCB Chip: WCH382 Data bit length: 5, 6, 7, 8 Check method: None, even, odd, space, mark Stop bit length: 1,2 System Requirements: There is at least one PCI - Express x1 slot available on your PC. Supported operating systems: The driver supports for Windows2000/xp/server 2003/xp 64-bit/Vista/7/8/Linux/Dos/MAC. Size: Approx. 12 * 8.5 * 2 cm / 4.72 * 3.34 * 0.78 in Weight: 49 g Package list: 1 * Converter Card 1 * Baffle Package List