power cable; power lead
Refers to a cable that supplies electrical power to a device. Common in consumer electronics and IT contexts.
Please plug the computer's power cable into the outlet.
I connected the power cable to the computer.
A power cable is included with this monitor.
Please unplug the power cable before cleaning.
The old power cable became internally broken.
電源ケーブル is the cable that powers a device, while 延長コード is an extension cord used to lengthen the reach of an outlet.
電源ケーブル is the cable itself, whereas コンセント refers to the wall outlet/socket it plugs into.
Long, cylindrical objects like cables are conventionally counted with 本.
Compound of 電源 (power source) and ケーブル (cable), a straightforward modern technical term.