No, the P4IBMD V1.0A comes with Intel ICH2 chip which supports USB 1.1 only.

The ALC 201A audio supports 2 channel.

Yes, the P4IBMD V1.0A supports hard drive capacity up to 160GB.

No, the P4IBMD V1.0A supports AGP mode up to 4X (1.5V only). You can install an AGP 8X card on this MB but the card will run with AGP 4X mode.

No, the P4IBMD V1.0A supports DDR RAM up to 266MHz.

P4IBMD v1.0A ,maximum CPU and HDD supported information as below, HDD:250G Pentium 4 400Mhz FSB (256K/512K L2 cache) CPU – 2.4G. Pentium 4 533Mhz FSB (512K L2 cache) CPU –No support Pentium 4 800Mhz FSB (512K L2 cache) CPU –No support Celeron 400Mhz FSB (128K L2 cache) CPU – 1.8G Mhz Pentium 4 533/800Mhz FSB (1M L2 cache) CPU – No support Celeron D 400Mhz FSB (256K L2 cache) CPU – No support