MacBook Pro late 2008 15 inch OS X EI Capitan 2.4 ghz intel core 2 duo 4 gb 1333 MHz ddr3 memory Nvida GeForce 9600M GT 256MB 256 gig harddrive I just renew the thermal paste on the cpu and graphic card The battery has 412 cycles on it it last about a couple of hours but this unit the battery is easy to replace. Everything works no marks on the screen. The back side has some marks on it. Never been dropped or there aren't any physical damage to the machine. If you have any question don't hesitate to send me a message.