This is why some devices, like hard drives and scanners that draw power through a USB connection, have to be plugged into specific USB ports to work.
Nke a bụ ya mere ụfọdụ ngwaọrụ, dịka ihe siri ike na ihe nyocha nke na-amịpụta ike site na njikọ USB, aghaghị ịbanye na ọdụ ụgbọ USB kpọmkwem iji rụọ ọrụ.