StarTech PEX1S553LP 1 Port PCI-Express Low-Profile

The PEX1S553LP PCI Express Serial Card turns a PCI Express slot into an RS232 (DB9) serial connection. The card is constructed using a native single chip design that lets you harness the full capability offered by PCI Express (PCIe), while reducing the load applied to the CPU by as much as 48% over conventional bridge chip serial 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 bracket installed, but includes an optional full profile bracket that lets you add a serial port to virtually any computer (regardless of the case form factor).This product is a replacement for our PEX1S552LP card. Backed by a StarTech.com Lifetime warranty and free lifetime technical support.
Native single-Chip, single lane PCI Express; 48% less cpu load, and increased performance
Pre-configured for low profile/half-height systems but includes a full profile bracket for versatility
Easy to install and use with full step-by-step instructions saving time and hassle
One high speed RS232 serial port with data transfer rate up to 460.8 Kbps
Ships with half-height/low profile mounting bracket, includes standard bracket
Selectable power output on pin 9 for the serial port
Native single-chip, single lane PCI Express
Single chip design optimizes speed and reliability