Low Profile PCIe RS232 Serial Adapter Card - 2 Port DB9 - 16950 UART - Windows & Linux (PEX2S953LP)

This is a low-profile PCIe expansion card that provides two DB9 RS232 serial ports for connecting legacy devices to modern computers. It uses the ASIX AX99100 chipset and is based on the 16950 UART standard, allowing for high-speed communication up to 921.6Kbps per port. The card is ideal for users who need to interface with industrial equipment, medical devices, or other systems that rely on serial communication. It supports both Windows and Linux operating systems, making it suitable for a wide range of environments from point-of-sale terminals to scientific instruments.

The card includes a low-profile bracket for installation in compact cases and also comes with a full-profile bracket for more traditional desktops or servers. This flexibility ensures compatibility with various case form factors without requiring additional modifications. Each serial port can be individually configured for power settings, including 12V, 5V, or no power through pin 9. This feature allows users to tailor the power delivery to match the requirements of connected devices.

The card features a 128-byte FIFO buffer for each port, which helps reduce data loss and improves communication reliability. It supports multiple data bit configurations, including 5 to 9 bits, making it adaptable to different serial communication standards. The AX99100 chipset ensures stable performance and compatibility with industry-standard protocols. The card is also PCI Express 1.1 compliant, ensuring it works with a wide range of motherboards and systems.

Installation is straightforward, with the card coming pre-configured and ready to use. No additional drivers are required for basic functionality, though advanced configurations may need specific software tools. The card is particularly useful in automation and control systems where reliable serial communication is essential. It can be used in environments such as factory automation, scientific research, or medical equipment where legacy devices still play a critical role.

Brand: StarTech.com
Model: PEX2S953LP
Specifications: 2x DB9 RS232 ports, 16950 UART, ASIX AX99100 chipset, 921.6Kbps max baud rate, 128-byte FIFO buffer, PCI Express 1.1 compliant
Features: Low-profile bracket included, full-profile bracket included, configurable power options (12V/5V), supports Windows and Linux, compatible with industrial and medical devices