1、Widely used for extending input and output port, compatible with for Raspberry Pi 1B+/ 2B/ 3B. 2、40 Pin GPIO cable ensure good contacts and suitability, meet your extending requirements. 3、High quality flexible ribbon cable, copper core, rainbow looking, efficiently avoid from interference, safe and durable to use. 4、T-type GPIO extension board for easy extension, can be applied to breadboard test. 5、No additional installation drive required, easy to use. Description: This is an extending kit for Raspberry Pi 1B+/ 2B/ 3B, consisting of a T-type GPIO extension board and 40Pin ribbon flat cable, so you can easily connect it to external peripherals and do breadboard test.   Features: Widely used for extending input and output port, compatible with for Raspberry Pi 1B+/ 2B/ 3B. 40 Pin GPIO cable ensure good contacts and suitability, meet your extending requirements. High quality flexible ribbon cable, copper core, rainbow looking, efficiently avoid from interference, safe and durable to use. T-type GPIO extension board for easy extension, can be applied to breadboard test. No additional installation drive required, easy to use. Specifications: Color: Shown as the pictures. Applicable Models: For Raspberry Pi 1B+/ 2B/ 3B Cable Core: Copper Core Cable Connector Type: 40 Pin Female to Female Cable Length: Approx. 20cm / 7.9in GPIO Extension Board Size: Approx. 74 x 59 x 20mm / 2.9 x 2.3 x 0.8in Package Size: 49g   Package List: 1 x 40Pin Female to Female GPIO Cable 1 x T-Type GPIO Extension Board