Features: Comply with PCI Express basic version 1.0 a/11 specification. PCI-Express rate: 25G/s full duplex channel. Compatible with standard 16c550 UART and 16 bytes send and receive FIFO, 2 serial port transmission rate up to 1 Myte/sec. Transmission rate: maximum transmission speed up to 115200bps. 2pcs DB9 serial port, built-in 256 bytes of FIFO buffer. Support 5,6,7 or 8 bits of data and 1 or 2 stop bits. Support odd, me.No result, no blank. Equivalent Validation Method of Mark 1. Support full duplex and half duplex serial communication. The driver supports for Windows 98SE/ ME/2000/ XP/ Vista/ Win 7/ win 8/ Win 1032 & 64bi DOs, Linux, Mac. Applications: widely used in banking, securities, supermarkets and other financial industry special equipment, such as modems, printers, scanners, cash registers, bar code readers, keyboards, digital display, electronic scales, data acquisition equipment and PC compatible systems and other series of equipment. Specification: Condition: 100% Brand New Item Type: Network Server Adapter Material: PCB Chip Scheme: WCH382L Host Interface: PCI-Express XI Port: 2 Standard RS232 Serial Port Transmission Rate: Each Serial Communication Rate up to 9216Kbps Weight: Approx. 116g Packing List: 1 * 2 Port RS-232 Serial Port PCI-E Card 1 * Drive CD 1 * Baffle . Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.