Fangrui Product Details 1. Rs232 Serial Port Tx382b 2 Port Pci To 9 Pin Com Riser Card Adapter With Tracking Number 2. Support 32-bit Pci, 33mhz Speed, Pci Standard 2.3 Version. 3. The 2-port Serial Card Can Be Installed In An Available Pci Slot To Add Two Rs232 Serial Ports. A Cost-effective Solution For Connecting Any New Or Legacy Serial Device, With Data Transfer Rates Up To 115.2 Kbps. 4. For Connecting Serial Modems, Pos Devices, Pdas, Digital Cameras, Printers, Isdn Terminal Adapters And More To Your System, The Adapter Card Supports Irq Sharing And Works Perfectly With Windows 7, Server 2008 R2, Xp, Server 2003, 2000, Me, 98, 95, Nt4, 3.1, Dos And Linux. It Does Not Support Win10 Operating System. 5. Supports Standard 16550 Uart With 256-byte Transmit And Receive Fifo. 6. The 16550 2-port Pci2s550 Serial Card Can Be Installed In An Available Pci Slot To Add Two Rs232 Serial Ports. A Cost-effective Solution For Connecting Any New Or Legacy Serial Device, With Data Transfer Rates Up To 115.2 Kbps.