The 90 Degree DC to Pigtail Cable is the perfect companion to any 2.1*5.5mm female power jack. Whether you need to hook up to an Arduino/Geekduino Board, a Female Pigtail Lead or the AX/MX Power Hub, this cable has you covered. The tail is 10" long and splits easily. Marked side negative, unmarked positive. The 90 degree angle plug lets you hook up, even in tight spaces!