UP Xeon® Motherboards - Socket R4 (LGA 2066) BOARDS supporting Intel® Xeon® W Processors / Socket R4 (LGA 2066) Supermicro's single processor Socket R4 design features the Intel® C422 chipset and the Intel® Xeon® W processor. The outstanding features include DDR4 ECC RDIMM/LRDIMM memory, onboard OCuLink connectors for Intel Virtual RAID on Chip (VROC) support, PCI-E 3.0, M.2 and SATA 3.0 (6Gbps) HDD/SSD, 1GbE networking and IPMI 2.0 plus KVM with dedicated LAN. Designed with performance, reliability, and manageability, Supermicro's single processor motherboards are the perfect solution for a variety of server and workstation applications.