| Abbreviation | Definition |
|---|---|
| PVS | Passive Vulnerability Scanner |
| PVS | Personal Video Station |
| PWA | Printed Wiring Assembly |
| PWM | Pulse-Width Modulation |
| PWN | Power On |
| PXB | PCI eXpander Bridge |
| PXU | Peripheral Expansion Unit |
| Q | Transistor (circuit diagram marking) |
| QAK | Quick-Acting Knob |
| QAV | Quantum Atlas V Hard Drive |
| QC | Quantum Computer |
| QCOK | Quality Control OK! |
| QCX | Quad Core Xeon (processor) |
| QED | Quiet Electronic Drive |
| QFEP | Quad Fast Ethernet PCI (Peripheral Component Interconnect) |
| QGD | Quad Gigabit hard Drive |
| QHD | Quad High Definition |
| QHM | Quadraphonic Headphones with Microphone |
| QHT | QR code Handy Terminal |
| QIC | Quarter Inch Cassette |