1.5m universal 90-degree usb 5v to 12v 5.5x2.1mm step up adapter cable for router speaker led camera en meer

description: ootdty application: 1. with this cable you can use your power bank, usb adapter to bluetooth or router, 2. use this cable, you can deliver your smart bluetooth speaker router led strip light and more 12v device by usb adapter three. power supply of usb charger, power bank, auto charger and more usb adapter. four. some mobile power bank sources have an automatic power-off function, and the output stream of 90ma automatically switched off. is it advisable to wall usb adapter. f