Printed in black ink directly on the bottom of the object
Listed as the model number in the serial-number box on the serial-number label.
13 x 18 1/2 x 21 in.
The dimensions are of the computer, excluding the attached power cord with standard U.S. three-prong power plug and the attached ribbon cable.. The object consists of the computer, a frosted vinyl dust cover, and a separate gray cable with a 1/2-inch diameter round five-pin polarized DIN or MIDI-type connector on one end and three two-conductor mini-phone plugs on the other end (2 x 3.5 mm & 1 x 2.5 mm).. A gray ribbon cable approximately 1 5/8 in. wide and approximately 72 in. long extends from the lower edge of the rear of the object. The free end of that cable is terminated in a blue Amphenol 57F-36 Centronics-type plug. 225F-A34-5 D6 socket. The front panel of the object has a built-in keyboard, a 12-inch CRT monitor, and two 5 1/4-inch floppy disk drives. The front panel also has a label that reads, "64K RAM," and a label that reads, "Radio Shack TRS-80 Model 4 Microcomputer.". There is a white adhesive label on the bottom of the object with illustrated instructions on how to connect cables to the computer, and with the number "87891196" printed at the bottom.