5.5x2.1mm/5.5x2.5mm 1 female to 2 male adapter power cord, approximately 40cm long. Equip with 304 switching button, easy to control and easy to use. , resistant to bending, not easy to , and with long service life. 1 Female to 2 male extension cables can use 1 power adapter to power two devices, saving costs. Widely used in DC5521 or 5525 interfaces devices such as LED light, routers, printers, monitors and more.