StarTech 4-port PCI Express RS232 Serial Adapter Card - PCIe Serial DB9 Controller Card 16950 UART - Low Profile - Windows macOS Linux

This PCI Express RS232 serial adapter card lets you add four RS232 (DB9) serial ports to your computer through a PCI Express (PCIe) slot. The 4 port PCIe serial card enables you to interact with serial devices, such as card readers, printers, PIN pads, and modems, at speeds of up to 921.6Kbps. 

Maximum Compatibility 

With broad OS support, including for Windows and Linux, this PCI E serial card is easy to integrate into mixed environments. The card comes pre-configured with low-profile brackets and includes optional full-profile brackets, so installation is easy regardless of the case form factor. This card is a direct replacement for PEX4S952LP.  

Experience Optimal Technology 

This PCIe to serial adapter supports the following features: 

Compatible with industry-standard 16950 UART 

Supports max baud rate of up-to 921.6Kbps 

Provides 5/12V power output on Pin 9 when external power is connected 

256-byte depth FIFO cache per transmitter and receiver 

Supports 9, 8, 7, 6, 5 data bits (one per port) 

Asix AX99100 chipset 

PCI Express 1.1 compliant 

The Choice of IT Pros Since 1985    

StarTech conducts thorough compatibility and performance testing on all our products to ensure we are meeting or exceeding industry standards and providing high-quality products to IT Professionals. Our local StarTech Technical Advisors have broad product expertise and work directly with our StarTech Engineers to provide support for our customers both pre and post-sales.  

PEX4S03LP is backed by a StarTech lifetime warranty and free lifetime technical support.