Dell PowerEdge 1600SC - Manual (Page 21)

UMB
upper memory block
UPS
uninterruptible power supply
USB
universal serial bus
V
volt(s)
VAC
volt(s) alternating current
VDC
volt(s) direct current
VGA
video graphics array
VLSI
very-large-scale integration
VRAM
video random-access memory
VRM
voltage regulator module
W
watt(s)
WH
watt-hour(s)
XMM
extended memory manager
XMS