The cable is easiest way ever to connect to your microcontroller/Raspberry Pi/WiFi router serial console port. Inside the big USB plug is a USB<->Serial conversion chip and at the end of the 36" cable are four wire - red power, black ground, white RX into USB port, and green TX out of the USB port. The power pin provides the 5V @ 500mA direct from the USB port and the RX/TX pins are 3.3V level for interfacing with the most common 3.3V logic level chipsets.
15 rows of double 5-hole rows + 48 individual holes. 2 power rails with positive/negative markings. 2.1" x 1.3" (54mm x 33mm), 0.063" thick FR4. 1.2mm / 0.047" drill holes. 4 x 0.125"/3mm drill mounting holes spaced on a 45.5mm x 25.4mm / 1.8" x 1" rectangle.
