Bios Setup
Page 24
... P4M900-M4 Primary/Secondary Master/Slave UDMA Ultra DMA function can support. As well, your system software both support Ultra DMA, select Auto to control the onboard HD audio. The Choices: Auto (default), Disabled. 23 If your hard drive and your operating environment requires a DMA driver (Windows ...95 or OSR2may need a third party IDE bus master driver).
... P4M900-M4 Primary/Secondary Master/Slave UDMA Ultra DMA function can support. As well, your system software both support Ultra DMA, select Auto to control the onboard HD audio. The Choices: Auto (default), Disabled. 23 If your hard drive and your operating environment requires a DMA driver (Windows ...95 or OSR2may need a third party IDE bus master driver).