

Ah damn, I loved that book when I was a kid. I can probably blame it, at least in part, for my career…
(I was a massive nerd and a FidoNet sysop back in the 80s & 90s, and got my first VMS and Unix experience hopping onto academic networks over dialup and X.25 gateways using, err, “unconventially obtained” credentials… This experience helped me convince my interviewer at Imperial College to overlook my less than stellar academic record to admit me to their Computing peogramme.
That book - and the movie WarGames - were definitely inspiring, if not life-changing.)
I just read the manual for the Euro version; basically, they assume you take the power strip/PDU with the computer.
So, you plug the special UPS into a spare outlet on the PDU; it monitors the power supply, and as soon as power from the PDU drops it jumps in and starts supplying. So plug into an outlet, then unplug the PDU from power, and the UPS takes over. Since at this point the pins on the PDU plug are live, they provide a safety cap to put over the end of the cable. The computer itself is never unplugged.