B&Ws have a semi-standard 12-position Amp 0.84" connector which supplies both power and video; and on some configurations of some models, outputs +5v to power other stuff. (not pictured)
The chassis is mounted on an angled wood shelf, and held in with four carriage bolts, which have washers and nuts on the underside. I like to replace the nuts with wingnuts, since it makes future servicing much easier.
The washers tend to stick to the underside of the wood, since they compress into it when the nuts get torqued down. Remove these! They love nothing more than to fall down into the bottom of the cabinet and land on your power supply, usually across two different fuses.