Description From one USB input to four serial uart port. Used FTDI FT4232 chip, up to 2Mbps, windows friendly. All 4x TXD and RXD LEDs, one power supply LED. Lead out 5V and 3.3V power supply, each provide up to 0.8A for all channels (not each). 4x pin header: 5V, 3.3V, TXD, RXD, GND. Logic power level select jumper 3.3V/5V on back side of the board, default connect to 5V. Each channel is loop-connected by jumper for testing purpose. Documentation please see on this page.
