This is an add-on TTL-to-RS232 module board for the FriendlyARM Mini210S, Tiny210SDK1, Tiny210V2SDK, Mini6410, Tiny6410, and Tiny4412 development systems.
The board features a MAX3232CSE+ transceiver and connects to the development system via supplied ribbon cables. It allows you to create an additional RS232 serial port with a DB9-Male interface.