4 Port RS-232 DB9 Serial M.2 B+M Key Card

AX99100 Chipset Supports RS-232 Bi-directional speeds up to 25 Mbps per port Full Serial Modem Control Supports Hardware, Software Flow Control. Even, Odd, None, Space and Mark parity. Special Baud Rate (Option). Multi-drop application for 9-bit mode The IOCrest SY-PEX15066 lets you add 4 RS-232 serial ports to your embedded computer thought a free M.2 Slot. To be used in applications such as serial attached devices, serial networking/monitoring equipment, data acquisition system, POS terminal and industrial PC, add-on I/O cards-serial/usb, and Embedded systems -For I/O expansion.