Courtesy of James Crippen.
The TI Explorer (first version) from some TI advertisements.
The machines are the large boxes on the bottom, the smaller boxes are "bricks" which contained two SCSI disks or tapes, then monitors, keyboards, and mice. The coiled cables are "console cables" which were fiber optic cables to reduce electromagnetic problems when routed through buildings (since the machines were kept separate from their consoles which resided in peoples offices).