Tyan Computer THUNDER N3600QX - Manual (Page 98)

UltraDMA-33/66/100: a fast version of the old DMA channel. UltraDMA is also
called UltraATA. Without a 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 shifts the
processor over and down, guiding it into the board and locking it into place.
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