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UltraDMA-33/66/100: a fast version of the old DMA channel. UltraDMA is also 
called UltraATA. Without proper UltraDMA controller, your system cannot take 
advantage of higher data transfer rates of the new UltraDMA/UltraATA hard drives. 
 
USB (Universal Serial Bus): a versatile port. This one port type can function as a 
serial, parallel, mouse, keyboard or joystick port. It is fast enough to support video 
transfer, and is capable of supporting up to 127 daisy-chained peripheral devices. 
 
VGA (Video Graphics Array): the PC video display standard 
 
V-SYNC: controls the vertical scanning properties of the monitor. 
 
ZCR:
 Zero Channel RAID.  PCI card that allows a RAID card to use the onboard 
SCSI chip, thus lowering cost of RAID solution 
 
ZIF Socket (Zero Insertion Force socket): these sockets make it possible to insert 
CPUs without damaging the sensitive CPU pins. The CPU is lightly placed in an 
open ZIF socket, and a lever is pulled down. This shift the processor over and down, 
guiding into the board and locking it into place.