The AXAGON PCEA-S4N PCI-Express card adds four RS-232 serial ports with DB9 connectors to your PC. Thanks to the proven ASIX AX99100 chipset, it ensures stable communication, high throughput, and full compatibility with industrial devices, POS systems, and CNC machines. Installation is easy with Plug and Play support and included brackets for standard and low-profile cases.

For demanding deployments, the card offers rich configuration options: speed, word length, parity, and flow control settings. Large FIFO buffers for each port improve throughput and reduce CPU load. ESD resistance up to 15 kV (air) and 8 kV (contact) protects your equipment even in heavy-duty operation.

• 4× RS-232 (DB9) – ports on the card holder and on a separate bracket connected by cable.
• Data rate up to 250 kBd – reliable communication with a wide range of devices.
• ASIX AX99100 chipset – high performance, compatibility, and stability.
• PCIe 2.0 x1 – compatible with x1 / x4 / x8 / x16 slots and generations 1.0a / 1.1 / 2.1 / 3.0.
• Large 256 B TX/RX FIFO per port – smooth data transfer.
• Wide configuration options – word length 5–9 bits, parity, 1 / 1.5 / 2 stop bits, Xon/Xoff and HW flow control.
• ESD protection – up to 15 kV (air) and 8 kV (contact).
• OS support – Windows XP to Windows 10 and newer, Windows Server 2003–2016 and newer (32/64-bit), Linux kernel 2.6.11+.