IBM x3650 M4 – 7915F2A 2U Rackmount Server

Intel® Xeon® Processor E5-2640 15M Cache, 2.5GHz, 7.2 GT/s Intel® QPI
Dual socket LGA 2011 supports Intel Xeon processor E5-2600/2600 v2 product family

1 x 8GB DDR3 1333 240-Pin DDR3 ECC UDIMMs (PC3 10666)
Up to 24 DIMM sockets (12 DIMMs per processor).
E5-2600 v2: RDIMMs and UDIMMs are supported

Non HDD
Up to 32 1.8″ SSD bays, or 16 2.5″ hot-swap SAS/SATA bays, or up to six 3.5″ hot-swap SAS/SATA bays, or up to eight 2.5″ Simple Swap SATA bays, or up to six 3.5″ Simple Swap SATA bays.

ServeRAID M5110eSAS/SATA Controller 
6 Gb SAS/SATA: RAID 0, 1, 10 with integrated M5110e or optional M5110

Up to six slots depending on the riser cards installed. The slots are as follows:
Slot 1: PCIe 3.0 x8; full-height, full-length
Slot 2: PCIe 3.0 x8; full-height, half-length
Slot 3: PCIe 3.0 x8; full-height, half-length
Slot 4: Optional, requires second processor and second riser card
Slot 5: Optional, requires second processor and second riser card
Slot 6: Optional, requires second processor and second riser card

Two USB 2.0 and one DB-15 video on front. Four USB 2.0, one DB-15 video, one DB-9 serial, one RJ-45 systems management, four RJ-45 GbE network ports, two optional RJ-45 or SFP+ 10 GbE network ports on rear. Two internal USB ports (for embedded hypervisor and internal tape drive).

Four integrated Gigabit Ethernet 1000BASE-T ports (RJ-45); two embedded 10 Gb Ethernet ports (10GBASE-T RJ-45 or 10GBASE-SR SFP+ based) on optional 10 Gb Ethernet mezzanine card (does not consume PCIe slot).

Microsoft Windows Server 2012 R2 (support is planned for earlier in 2014), 2012, 2008 R2 and 2008, Red Hat Enterprise Linux 5 and 6, SUSE Linux Enterprise Server 10 and 11, VMware ESX 4.1 and VMware ESXi 4.1 embedded hypervisor (not supported with E5-2600 v2 models), VMware vSphere 5 (ESXi) and vSphere 5.1 (ESXi).