This is a Female RS232 to TTL serial converter serial cable. The Type I cable converts a serial signal to TTL with connections for Tx, Rx, +3V/+5V and ground. The TTL connector is a 4-pin Fritcion Lock with a 0.100" pitch. This item replaces MCU-016-172
ATC and ATO blade fuses are standard sized fuses and are the most common type of fuse for automotive and marine applications, and are commonly mounted in a fuse holder, block or panel within an electrical application.