This Commodore SX-64 Computer is a vintage home computer produced by Commodore in November 1983. A classic piece of portable technology from Commodore. It includes the manual and attachable accessory case. A must-have for collectors of vintage computing memorabilia. The keyboard has recently received a new keypad membrane and every key works like brand new! Handle hinge caps are 3D printed replacements, but they look great. An auxillary power supply for a 1750 Ram Expansion Unit is inside. I used this unit with GEOS and the 512 MB ram expansion built in. SImply remove the REU cover, undo the expansion port screws and insert the REU into the expansion port. It worked perfectly for me for years. The Commodore SX-64 Computer is a unique and sought-after item for those interested in the history of personal computing.