Summary: This beautiful workstation is advertised as easily upgradable, and expandable, but not so. The critical parts are not available from HP or resellers, and none to be found. So the main reason for buying this over priced boat anchor was a hoax! It does not matter if no tools are necessary if the parts cannot be found. The Z1 is just over a year old and I was told everything from it is too new for parts to be available, to it is too old and HP does not support parts for it.