| Acronym | Meaning |
| PHB | Photochemical Hole Burning |
| XTA | XT (Extended) Attachment |
| AN | Active Network |
| ECC | Error Correction Code (Error Checking And Correction) |
| PAP | Password Authentication Protocol |
| HD | High Density |
| SMB | Server Message Block |
| EIDE | Enhanced Intelligent Drive Electronics |
| OSR | OEM System Release |
| VCPI | Virtual Control Program Interface |