L4IBMG3 v1.1x, maximum CPU and HDD supported information as below,
HDD: 250G
CPU: Pentium 4 400Mhz FSB (256K/512K L2 cache) CPU – 2.0G 
           Pentium 4 533Mhz FSB (512K L2 cache) CPU – 2.53G 
           Pentium 4 533Mhz FSB (512MB/1M L2 cache) HT CPU – 3.06G
           Celeron 400Mhz FSB (128K L2 cache) CPU – 1.8G