StarTech.com 2-port PCI Express RS232 Serial Adapter Card - PCIe to Dual Serial DB9 RS-232 Controller - 16550 UART - Windows and Linux

StarTech.com 2-port PCI Express RS232 Serial Adapter Card - PCIe to Dual Serial DB9 RS-232 Controller - 16550 UART - Windows and Linux

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® and Linux Kernel 2.6.11 to 4.11.x, 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 2-year warranty and free lifetime technical support.

More from the Manufacturer

More from the Manufacturer

• Automated in-band software flow control using programmable Xon/Xoff in both directions


• Automated out-of-band flow control using CTS/RTS and DSR/DTR


• Native single-Chip, single lane PCI Express


• 128-byte deep FIFO per transmitter and receiver


• Selectable power output on pin 9 for the serial port


• Includes half-height/low profile mounting bracket


• Compliant with PCI Express base specifications revision 1.0a


• Two high speed RS232 serial ports with support for data transfer rates up to 460.8 Kbps