Intel Server Board S3420GPLX supports Intel Xeon processor 3400 series (Lynnfield) /Clarkdale, 3420 + PCIe switch chipset, 6 RDIMMs or 4 UDIMMs DDR3. 1 PCIe G2 x8 w/ x16 connector 1 PCIe G2 x8 w/ x8 connector 1 PCIe G2 x4 w/ x8 connector 1 PCIe G1 x4 w/ x8 connector 1 PCIe G1 x1 w/ x1 connector 1 PCI 32/33 (5V) 1 Mezz Connector - SAS module. Dual GbE. 6 SATA II ports (3Gb/s) support Intel Integrated RAID Module & Intel SAS Entry RAID Module on Mezzanine Connector. Designed to work with Server Chassis SC5650UP. The following Kingston parts are Intel qualified for these platforms: KVR1066D3E7S2GI- 2GB DDR-3 1066 module ECC; KVR1066D3S8R7S1- 1GB DDR-3 1066 module ECC Registered; 1066D3D8R7S2GI- 2GB DDR-3 1066 module ECC Registered; 1066D3Q8R7S4GI- 4GB DDR-3 1066 module ECC Registered.