| Abbreviation | Definition |
|---|---|
| ODI | Overall Driver Index |
| OHCI | Open Host Controller Interface |
| OOBE | Out-Of-Box Experience |
| OPK | Open Product Key |
| OPM | Output Protection Management |
| OSPM | OPerating SysteM |
| PA | Physical Address |
| PAP | Protected Audio Path |
| PATA | Parallel Analog Telephone Adaptor |
| PCIIO | Peripheral Component Interface Input/Output |
| PCM | Pulse Code Modulation |
| PD | Phase Dual |
| PDB | Parallel DataBase |
| PDO | Physical Device Object |
| PE | Protected Environment |
| PEDS | Pedestrians Educating Drivers on Safety |
| PFD | Prefast For Drivers |
| PHY | Physical Layer |
| PID | Product IDentifier |
| PIFD | Passive Income For Drivers |