HP integrity superdome x Service Manual page 127

UEFI
Unified extensible firmware interface, replaces EFI.
UID
Unit identification.
UPS
Uninterruptible power supply.
USB
Universal serial bus.
VRM
Voltage regulator module.
WBEM
Web-based enterprise management.
XBar
Crossbar.
XFM
Crossbar Fabric Module.
XFM2
Crossbar Fabric 2 Module. Displayed as SXFM by the OA.
XPF
x86/x64 Processor Family.
Standard terms, abbreviations, and acronyms 127