Syba Best Connectivity PCI-Express 4x Serial DB9, 1x Parallel Combo Card, Fan-Out Cable SD-PEX50023 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