The first obvious requirement is a rip. If it isn't sitting next to it on the floor or hanging off the back of it, it might have an internal. If there are two network ports on the right hand side then it has an inbuilt rip, if you press "print" on the control panel the fiery screen should come up. If you have none of this then all you have is a pretty marginal photocopier.
The rip takes about 5-10min to boot up so if you turn the machine on hit the print button you won't see anything, to be safe wait 30min. The network port nearest to the rear of the machine is the controller. It has 4 status led's, they will flash though a sequence when the machine boots up. Should it boot ok all the led's should be off.