| P |
P/N | Parts/Number |
PCBA | Printed Circuit Board |
| Assembly |
PER | Post ERror |
PLO Sync | Phase Lock Oscillator |
| Syncronous |
PMI | Partial Medium Indicator |
| R |
RCD | Read Cache Disable |
REQ | REQuest |
RH | Relative Humidity |
RST | ReSeT |
| S |
S/N | Serial/Number |
SCSI | Small Computer System |
| Interface |
SCT | SeCTor |
SEL | SELect |
SelfTest | Self Test |
SG | Signal Ground |
SP | Save Page |
SPM | SPindle Motor |
| T |
TB | Transfer Block |
TPI | Tracks Per Inch |
| U |
UnitOfl | Unit Offline |
| V |
VCM | Voice Coil Motor |
| W |
WCE | Write Cache Enable |
126 |
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