StarTech.com PEX4S232485 - 4-port PCI Express Serial Adapter

The StarTech.com PEX4S232485 4-Port PCI Express Serial Combo Card is an internal expansion card for desktop PCs. It connects modern computers to legacy or industrial hardware requiring dedicated serial connectivity. Using a standard PCI Express interface, the card provides a stable connection for peripheral systems, with data transfer rates reaching 0.46 Mbit/s. Four independent channels allow for the simultaneous operation of multiple devices.

An integrated 256-byte FIFO buffer ensures stable data handling during continuous operation. Typical applications include connecting automation equipment, laboratory sensors, or barcode scanners to a central workstation. The card is compatible with both 32-bit and 64-bit desktop architectures. Supported operating systems include Windows XP, Vista, 7, and 8, which helps maintain functionality for older software. The controller is also compatible with Linux environments without the need for complex configuration.

• Two RS232 interfaces and two configurable RS422/RS485 ports to support different signaling standards
• Includes low-profile and full-profile mounting brackets for installation in various chassis sizes
• Designed as a local hardware bridge; does not include Wi-Fi or Ethernet networking capabilities
• Dimensions: 125 mm (W) x 70 mm (D) x 20 mm (H)
• Weight: 67.4 g, designed to minimize physical strain on the host motherboard connector