| Acronym | Meaning |
| DMI | Desktop Management Interface |
| VRU | Virus Research Unit |
| FDHD | Floppy Drive, High Density |
| WATS | Wide Area Telecommunications System |
| OPSEC | Open Platform For Secure Enterprise Connectivity Alliance |
| ESCD | Extended System Configuration Data |
| LIM | Lifeline Interface Module |
| SAN | Storage Area Network |
| DID | Direct Inward Dialing |
| PFR | Portable Font Resource |