This connecter board is a highly practical interface used for writing to our motor controller iMSc01, iMCs02 boards etc. It is also used for serial communication between iMCs02 and PC via female/female D-SUB9 pin straight cable. The connector has an onboard monitor that transmits a signal to and from the PC, which allows you to confirm its connection state with the controller board. The board also has two onboard switches for controlling signals sent to the motor controller's FWE, MD2, and RST.