Asus P2B-N P2B-N User Manual - Page 118
ASUS P2B-N User's Manual, UltraDMA/33, USB Universal Serial Bus
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7. APPENDIX UltraDMA/33 UltraDMA/33 is a new specification to improve IDE transfer rates. Unlike traditional 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 automatically 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. 7. APPENDIX Glossary 118 ASUS P2B-N User's Manual