P4VXAD+ v1.0A maximum CPU and HDD supported information as below,
HDD: 250G
CPU: Pentium 4 400Mhz FSB (256K/512K L2 cache) CPU – 2.4G. 
           Pentium 4 533Mhz FSB (512K L2 cache) CPU – 2.53G 
           Celeron 400Mhz FSB (128K L2 cache) CPU – 1.8G

The P4VXAD+ V1.0A is built in CMI 9739 Audio chip with additional Dolby Digital decoder which supports up to 6 channels.

Yes, the P4VXAD+ V1.0A supports hard drive capacity up to 160GB.

不支持, P4VXAD+ 只支持 P4 Northwood 核心最高到 2.53GHz & Celeron CPU最高到 1.8GHz.

 P4VXAD+ 不支持 P4 Prescott / Celeron D 系列的 CPU，原因是H/W 设计限制。

不支持，P4VXASD V1.X 不支持 P4 Prescott CPU.