This card allows you to add four RS422/RS485 industrial serial ports via an M2 PCIe port. Compatible with Windows and Linux environments, this solution supports data rates up to 230400 bps with integrated hardware FIFO Linux Kernel 2.4, 2.6 and later.
For M.2 B+M Key PCI Express 2.0 x1 port or higher in 2280 format.

Technical description:
M.2 PCI Express 2.0 x1 B+M Key M.2 2280 host interface.
HDM WCH384 chipset.
4 RS422/RS485 DB9 ports on flexible cables.
DB9/terminal block adapters provided for wire-to-wire mounting.
Built-in UART compatible with 16C550 and 16C570.
Transmission rate 1200 bps to 230400 bps.
FIFO memory 256 byte transmission/reception buffers.
Automatic assignment of IRQs and I/O addresses by BIOS.
Dimensions 22 mm x 80 mm, net weight 50g.
Operating temperature -40°C to +85°C.

This card allows you to add four RS422/RS485 industrial serial ports via an M2 PCIe port. Compatible with Windows and Linux environments, this solution supports data rates up to 230400 bps with integrated hardware FIFO management. Windows, Linux Kernel 2.4, 2.6 and later. For M.2 B+M Key PCI Express 2.0 x1 port or higher in 2280 format. Technical description: M.2 PCI Express 2.0 x1 B+M Key M.2 2280 host interface. 4 RS422/RS485 DB9 ports on flexible cables. DB9/terminal block adapters provided for wire-to-wire mounting. Built-in UART compatible with 16C550 and 16C570. Transmission rate 1200 bps to 230400 bps. FIFO memory 256 byte transmission/reception buffers. Automatic assignment of IRQs and I/O addresses by BIOS. Dimensions 22 mm x 80 mm, net weight 50g. Operating temperature -40°C to +