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All the BIOS except E020814S.rom do not have an option to disable onboard LAN for P4IBASD PCB1.1. However, it looks like the onboard LAN and USB 2.0 function is set to the same option on BIOS e020814s.rom (RTL800B & VT6202 Support Disable/Enable). Once you disable onboard LAN, you also disable the onboard USB 2.0 option. Is it normal? Is there any way to separate these two functions?

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What is the maximum CPU and HDD capacity supported in P4IBASD v1.1A M/B ?