| Short name | Description | Year | Manufacturer | Runnable | Parent |
|---|---|---|---|---|---|
| rm380z | RM-380Z, COS 4.0B | 1978 | Research Machines | Yes | |
| rm380z34d | RM-380Z, COS 3.4D | 1978 | Research Machines | Yes | rm380z |
| rm380z34e | RM-380Z, COS 3.4E | 1978 | Research Machines | Yes | rm380z |
| rm380zhrg | RM-380Z, COS 4.0B with HRG | 1978 | Research Machines | Yes | rm380z |
| rm480z | LINK RM-480Z (set 1) | 1981 | Research Machines | Yes | rm380z |
| rm480za | LINK RM-480Z (set 2) | 1981 | Research Machines | Yes | rm380z |