P2V: Physical-to-Virtual
PAE: Physical Address Extension
PCM: Package Command Manager

PDC: Primary Domain Controller
PDC: Professional Developer Conference
PDO: Physical Device Object
PE: Pre-installation Environment
PEX: PHIGS Extension for X
PGM: Pragmatic General Multicast
PIT: Programmable Interrupt Timer
PMP: protected media path

PNRP: Peer Name Resolution Protocol
PPTP: Point-to-Point Tunneling Protocol
PUMA: protected user-mode audio
PVP: protected video path
PVP: Protected Video Playback
PWL: Password List