StarTech.com 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 - RS485

★★★★★ 4.1 120 reviews

US$67.95
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US$67.95
Price when purchased online
Free shipping Free 30-day returns

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Product details

Management number 204002195 Release Date 2025/10/31 List Price US$67.95 Model Number 204002195
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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.

More from the Manufacturer


  • 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

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