The StarTech.com PEX2S552LP low profile/half-height PCI Express Serial Card turns a PCI Express slot into two RS232 (DB9) serial connections.
The card is constructed using a native single chip design that lets you harness the full capability offered by PCI Express, while reducing the load applied to the CPU by as much as 48% over conventional bridge chip cards.
The PCI Express RS232 Serial Adapter Card is compatible with a broad range of operating systems, including Windows 2000/XP/2003/Vista/Windows 7/Server 2008 R2 (32 and 64 bit), Linux Kernel 2.6.11 and up, and ships with a low profile/half-height installed but includes an optional full profile bracket that lets you add two serial ports to virtually any computer (regardless of form factor).
Add Serial Ports to PCBased on a native single-chip and high performance 16550 UART design, the StarTech PEX2S552LP card adds two RS232 serial ports to your PCI Express equipped computer for easy connection to various serial peripherals.
Low/Full Profile BracketThis card is pre-configured with half-height mounting bracket for low profile system, but includes a full profile bracket for versatility.