Asus P3B-1394 User Manual page 100

UltraDMA/33
UltraDMA/33 is a new specification to improve IDE transfer rates. Unlike tradi-
tional PIO mode, which only uses the rising edge of IDE command signal to transfer
data, the DMA/33 uses both rising edge and falling edge. Hence, the data transfer
rate is double of the PIO mode 4 or DMA mode 2. (16.6MB/s x2 = 33MB/s).
USB (Universal Serial Bus)
A new 4-pin serial peripheral bus that allows plug and play computer peripherals
such as keyboard, mouse, joystick, scanner, printer and modem/ISDN to be auto-
matically configured when they are attached physically without having to install
drivers or reboot. With USB, the traditional complex cables from back panel of your
PC can be eliminated.
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7. APPENDIX 7. APPENDIX
ASUS P3B-1394 User's Manual