There is a old computer in the lab that can be used if you forgot your laptop power supply or just came by. Or if you do not want to risk your own hardware while connecting a device you just built.
Turning It On
You have to flip the manual power switch on the power supply. The PC will then turn on automatically. The system is configured for autologin as penny.
Turning It Off
Just shut down the system as usual, then switch off the switch on the power supply.
Joining the MUC
There is a dedicated XMPP account for penny, just start pidgin.