Manual
Page 9
... Memory 16 x 1.5V DDR3 DIMM sockets supporting up to 128GB (UDIMM) and 512GB (RDIMM) of system memory * Due to Windows 32-bit operating system limitation, when more than 4 GB of physical memory is installed, the actual memory size displayed will be less than 4 GB.... Support for ECC RDIMM/ UDIMM memory modules LAN Intel® I350 supports 10/100/1000 Mbps (GA-7PESH1) Intel® X540-AT2 supports dual 10G Base-T ethernet LAN ports (GA-7PESH2) Expansion Slots 1 x PCI Express x16 slot, running at x16 (Gen3/PCIE_2) ...
... Memory 16 x 1.5V DDR3 DIMM sockets supporting up to 128GB (UDIMM) and 512GB (RDIMM) of system memory * Due to Windows 32-bit operating system limitation, when more than 4 GB of physical memory is installed, the actual memory size displayed will be less than 4 GB.... Support for ECC RDIMM/ UDIMM memory modules LAN Intel® I350 supports 10/100/1000 Mbps (GA-7PESH1) Intel® X540-AT2 supports dual 10G Base-T ethernet LAN ports (GA-7PESH2) Expansion Slots 1 x PCI Express x16 slot, running at x16 (Gen3/PCIE_2) ...