StarTech Low Profile 1 Port 16550 Serial PCI Card Model PCI1S550_LP Type: PCI to Serial Port Card External USB Ports: PCI External Ports: 1 - DB 9-pin Serial Male Data Transfer Rate: 920 Kbits/Sec max Operating Systems Supported: Windows 3.x/NT4/95/98/ME/2000/XP/Server 2003, DOS and Linux Specifications: Safety Standards Europe: CE Safety Standards International: UL Dimensions: 2.2 x 4.7 Weight: 0.27 lbs. (include package)