$20 · Rolux D-Tap/P-Tap to USB Adapter Connector for V-Mount V-Lock Battery
Rolux D-Tap/P-Tap to USB Adapter Connector for V-Mount V-Lock Battery
https://www.amazon.ca/Adapter-Connector-V-Mount-V-Lock-Battery/dp/B07KVFTDGR/ref=sr_1_1?keywords=rolux+usb&qid=1562266787&s=gateway&sr=8-1