Power
In the late 1990s, I worked setting up small business and domestic customers' new computers.
A lovely lady I called on had her computer already set up except it was not connected to the AC supply. She assured me that the computer was delivered without a power cord and I went to the local computer retailer and bought one.
I told her I would now check out the computer and install the software. "There is no need to do that", she said, "I've already done it".