Abstract: A removable/adjustable digital display accessory (10) for computers (60) for displaying a digital readout indicative of the current operating speed of the processor incorporated in a personal computer (60). The accessory (10) is designed for being removably secured to the cover (64) of a personal computer case (62) within an otherwise unused drive slot (66) defined by the cover (64). The accessory (10) is adapted to be installed in lieu of a cover plate (68) in the cover (64). The accessory (10) includes a base plate (12) and at least a digital display unit (26) having a digital display (28). The digital display unit (26) is provided for indicating the current processor speed and is carried on the back of the base plate (12). A turbo indicator (34) and a hard disk drive indicator (36) are also carried by the base plate (12). The accessory (10) may also be provided with a date and time clock (38) for continual display of the date and time.