Tyan Computer Personal Computer S2877 用户手册

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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.