Dell PowerEdge 1600SC - Manual (Page 41)

tpi
Abbreviation for tracks per inch.
UL
Abbreviation for Underwriters Laboratories.
UMB
Abbreviation for upper memory blocks.
upper memory area
The 384 KB of RAM located between 640 KB and 1 MB. If the system has an Intel386 or higher microprocessor, a utility called a memory manager can create
UMBs in the upper memory area, in which you can load device drivers and memory-resident programs.
UPS
Abbreviation for uninterruptible power supply. A battery-powered unit that automatically supplies power to your system in the event of an electrical failure.
USB
Abbreviation for Universal Serial Bus. A USB connector provides a single connection point for multiple USB-compliant devices, such as mice, keyboards, printers,
and system speakers. USB devices can also be connected and disconnected while the system is running.
utility
A program used to manage system resources—memory, disk drives, or printers, for example.
UTP
Abbreviation for unshielded twisted pair.
V
Abbreviation for volt(s).
VAC
Abbreviation for volt(s) alternating current.
VCCI
Abbreviation for Voluntary Control Council for Interference.
VCR
Abbreviation for video cassette recorder.
VDC
Abbreviation for volt(s) direct current.
VGA
Abbreviation for video graphics array. VGA and SVGA are video standards for video adapters with greater resolution and color display capabilities than