ASUS ESC4000, Intel® 5520, Socket B (LGA 1366), Intel ICH10R, Intel, 6.4 GT/s, Intel® Xeon® ASUS ESC4000. Motherboard chipset: Intel® 5520, Processor socket: Socket B (LGA 1366), Motherboard southbridge: Intel ICH10R. Supported memory types: DDR3-SDRAM, Supported DIMM module capacities: 16GB, 1GB, 2GB, 4GB, 8GB, Maximum internal memory: 192 GB. Storage drive sizes supported: 3.5", Supported storage drive interfaces: Serial Attached SCSI (SAS), Serial ATA. Maximum graphics card memory: 8 MB. Ethernet interface type: Fast Ethernet, Gigabit Ethernet, Ethernet LAN data rates: 10,100,1000 Mbit/s, LAN controller: Intel® 82574L