To all of those that asked what the Model 100 DVI is... Ths Disk-Video Interface is a rectangular box (mostly hollow), the size of half of a PC which enables the Model 100 to use 5-1/4" floppy disks and to hook-up to a standard composite monitor or a TV on channel 3 or 4. It could display 40x24 or 80x24 characters. Costing around $500, the unit typically (and I'd have to dig-out an old catalog to check; it's been a while) came with 1 or 2 floppy disk drives and had a built-in power supply. The companion monitor (an optional-extra) was a composite green-screen. The included diskette was for a simple disk-based DOS wedge for BASIC. Connection to the M100 was accomplished through a shielded, flat, 40-pin ribbon cable with a custom pin arangement that attached to the 40-pin DIP socket on the bottom of the M100. The standard DIP socket on the M100 was retrofitted with a ZIF socket to ease the stress on the cable. The insulation-displacement connector on the M100 side pearced the cable in a non-standard way, preventing meer mortals from making a cable on their own with parts from Digi-Key--I tried! BTW, replacements are $24 from Tandy Parts. As an aside, DOS disks are $5. As far as I know, the DVI came out before the other floppy drives for the M100, the PDD1 and PDD2. I hope that this clears things up. ------------------------------------------------- Rich Cini/WUGNET e-mail: rcini(a)msn.com - ClubWin Charter Member (6) - MCPS Windows 95/Netowrking