System Board Option # Manufacturing Part # Description Previous Part # X4006A-CDP 540-5821 [F] CPU/Memory Uniboard w/ 2× US III Cu 900MHZ, 0MB n/a X4007A-CDP 540-5825 [F] BUY CPU/Memory Uniboard w/ 4× US III Cu 900MHZ, 0MB n/a XCPUBD-2-1050-CDP 540-5795 [F] CPU/Memory Uniboard w/ 2× US III Cu 1050MHz, 0MB 540-5623 [F] XCPUBD-222-1050 540-5797 CPU/Memory Uniboard w/ 2× US III Cu 1050MHz, 4GB n/a XCPUBD-222-1200 540-5682 CPU/Memory Uniboard w/ 2× US III Cu 1.2GHz, 4GB n/a XCPUBD-4-1050-CDP 540-5799 [F] BUY CPU/Memory Uniboard w/ 4× US III Cu 1050MHz, 0MB 540-5267 [F] XCPUBD-442-1050 540-5858 CPU/Memory Uniboard w/ 4× US III Cu 1050MHz, 8GB n/a XCPUBD-482-1050 540-5780 CPU/Memory Uniboard w/ 4× US III Cu 1050MHz, 16GB n/a XCPUBD-484-1050 540-5803 CPU/Memory Uniboard w/ 4× US III Cu 1050MHz, 32GB n/a XS400BRD-482-1050 540-5662 CPU/Memory Uniboard w/ 4× US IV 1.05GHz, 16GB n/a XS400BRD-482-1050C Capacity On Demand (COD) Uniboard w/4× unlicensed US IV 1.05GHz, 16GB 540-6070 CPU/Memory Uniboard w/ 4× US IV 1.05GHz, 16GB n/a XS400BRD-482-1200C 540-6071 Capacity On Demand (COD) Uniboard w/ 4× unlicensed US IV 1.2GHz, 16GB n/a XS400BRD-484-1050 540-5663 CPU/Memory Uniboard w/ 4× US IV 1.05GHz, 32GB n/a XS400BRD-484-1050C Capacity On Demand (COD) Uniboard w/ 4× unlicensed US IV 1.05GHz, 32GB 540-6072 CPU/Memory Uniboard w/ 4× US IV 1.05GHz, 32GB n/a XS400BRD-484-1200 540-5939 CPU/Memory Uniboard w/ 4× US IV 1.2GHz, 32GB n/a