StarTech 4 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART Model PEX4S952 Type: PCI Express to Serial Port Card External Ports: 4 x Serial Ports Operating Systems Supported: Windows 2000, XP (32-bit, 64-bit), Vista (32-bit, 64-bit) Weight: 0.85 Parts: 1 year limited
