Tyan Computer THUNDER N3600T - Manual (Page 80)

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bus or a set of SCSI busses. SISL: SCSI Interrupt Steering Logic ( LSI ) (only on LSI
SCSI boards)
Sleep/Suspend mode: in this mode, all devices except the CPU shut down.
SDRAM (Static RAM): unlike DRAM, this type of RAM does not need to be refreshed in
order to prevent data loss. Thus, it is faster and more expensive.
Standby mode: in this mode, the video and hard drives shut down; all other devices
continue to operate normally.
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.