Easily add 2 Serial and 1 Printer ports to desktop PCs. Serial ports are ideal for connecting to modem, cellular phone, PDA, ISDN terminal adapter, satellite receiver, graphic tablet, bar code scanner, label printer, automated teller machine, GPS, finger print identification, Infra-Red transceiver, packet radio, magnetic card reader, Pos devices, multi-modem dail-up server, digital camera, automation interface, and card reader. - Single-Lane (x1) PCI-Express with Throughput up to 2.5Gbps - Serial Port (RS-232) Interface: Compatible with Industrial Standard 16C550 UART On Chip 256-byte Depth FIFO in Transmit Transfer Data Rates up to 250Kbps on Each Port Supports Hardware and Software Flow Control Supports 5, 6, 7, 8-bit Serial Format - Parallel Port Interface: IEEE 1284 Compatible Parallel Port Fast Data Rate up to 1.5Mbps