Startech PCI2S1P, Bus PCI / PCI-X (5 / 3.3V), Port-2, Maximum Data Transfer Rate Up to 1.5 Mbits/sec, Connector 1 - PCI / PCI-X (Universal 3.3 & 5V, 32-bit) Male, External Ports 1 - DB-25 (25 pin, D-Sub) Female/2 - DB-9 (9 pin, D-Sub) Male, O/S Windows® DOS, 95, 98SE, ME, XP, Vista, 7, 8, 8.1, 10, Included 1 - PCI 2S1P Card, 1 - DB9 Ribbon Cable, 3 - Low Profile Brackets, 1 - Driver CD, 1 - Instruction Manual. The PCI2S1P PCI Serial/Parallel Combo Card turns a PCI slot into two external 16C550 serial ports and one external EPP/ECP parallel port - an all-in-one solution that gives you bot