2 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART

The PEX2S553 PCI Express serial card lets you turn a PCI Express slot into 2 RS232 (DB9) serial ports. Based on a native single chip design (no bridge chip), this 2-port serial adapter card allows you to harness the full capability offered by PCI Express (PCIe), and reducing the load applied to the CPU by as much as 48% over conventional serial cards.

The RS232 Serial Adapter Card (PEX2S553) 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 MAC OS 10.4 and above.

Plus, the serial card includes an optional half-height/low profile bracket that allows the card to be installed in any PCI Express slot, regardless of the size of the computer case.

This product is a replacement for our PEX2S552 card.

Backed by a StarTech.com Lifetime warranty and free lifetime technical support.

• Native single-chip, single lane PCI Express chipset delivers true PCIe performance
• Standard and low profile/half-height bracket included to ensure fitment in any system
• Easy to install and use with full step-by-step instructions saving time and hassle

• Two high speed RS232 serial ports with support for data transfer rates up to 460.8 Kbps
• Compliant with PCI Express base specifications revision 1.0a
• Includes half-height/low profile mounting bracket
• Selectable power output on pin 9 for the serial port
• 128-byte deep FIFO per transmitter and receiver
• Native single-Chip, single lane PCI Express
• Automated out-of-band flow control using CTS/RTS and DSR/DTR
• Automated in-band software flow control using programmable Xon/Xoff in both directions