Cromemco From boards to systems Cromemco S-100 Microcomputer Systems (Z-80 Processor)

| System_ | Year_Introduced | S_100_slots | Internal_Floppy_Disk | Internal_Hard_Disk |
|---|---|---|---|---|
| Z-1 | 1976 | 21 | n/a | n/a |
| Z-2 | 1977 | 21 | n/a | n/a |
| System Zero | 1980 | 4 | n/a | n/a |
| System One CS-1 | 1981 | 8 | 2 x 5-inch | n/a |
| System One CS-1H | 1981 | 8 | 1 x 5-inch | 5 megabytes |
| System Two Z-2D | 1978 | 21 | 2 x 5-inch | n/a |
| System Two Z-2H | 1980 | 12 | 2 x 5-inch | 11 megabytes |
| System Three | 1978 | 21 | 4 x 8-inch | n/a |