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

StarTech.com 2-Port Native PCI Express RS232 Serial Adapter Card with 16550 UART – PEX2S553
Expand your system’s serial connectivity with the PEX2S553 PCI Express Serial Adapter Card. This durable 2-port card adds two RS232 (DB9) serial ports to your PC using a single PCIe slot, allowing seamless connection to a wide range of serial devices such as POS systems, industrial machines, security cameras, and ATMs.

Built on a native single-chip architecture, it ensures stable communication while reducing CPU load by up to 48% compared to traditional serial cards. With high-speed data transfer rates up to 460.8 Kbps and broad operating system compatibility (Windows, Linux, macOS), it’s an ideal solution for professional environments.

This adapter includes a low-profile bracket for small form factor cases, offers selectable power output on pin 9, and features a 128-byte FIFO buffer to prevent data loss during transmission. Fully compliant with PCI Express base spec revision 1.0a, the card supports automated flow control using CTS/RTS, DSR/DTR, and Xon/Xoff.

Key Features

• Adds 2 RS232 (DB9) serial ports via PCIe

• Native single-chip design, reduces CPU load by up to 48%

• Data transfer rates up to 460.8 Kbps

• 128-byte FIFO per transmitter/receiver

• Compatible with Windows, macOS, Linux

• Supports in-band/out-of-band flow control (CTS/RTS, DSR/DTR, Xon/Xoff)

• Selectable power on pin 9

• Includes low-profile bracket for SFF systems

• Replaces older PEX2S552 model

Attributes
MPN: PEX2S553
Model: PEX2S553
Size: L
Color: green
Age Group: adult
Gender: unisex
Dimensions: 239.000 (L) x 186.000 (W) x 91.000 (H)
Weight: 1.190 kg