The PEX4S232485 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 lets you add two RS232, and two RS422/485 serial ports to your PC through a PCI-Express expansion slot.

This PCI express serial card is a single card solution that is compatible with nearly any serial communication protocol, supporting RS-232, RS-422, RS-485 2-wire or RS-485 4-wire operating modes.

A flexible solution for adding serial ports to full-sized, or small form factor systems, the 4-port serial card includes both low and full profile brackets while the included breakout cable helps to avoid cluttered connections.

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

• Compliant with PCI-Express Specification 1.0a
• Standard and low-profile bracket included
• 256-byte deep FIFO per transmitter and receiver
• Supports 2-Wire / 4-Wire RS485 modes
• RS232 data transfer rates up to 460 Kbps
• 4 port (2 x RS232, 2 x RS422/485) serial combo card