IBM System x3550 M4

Form factor/height	1U Rack
Processors (max)	Up to two 8-core Intel Xeon E5-2600 series processors
Cache (max)	20 MB per processor
Memory (max)	Up to 768 GB via 24 slots (UDIMM/RDIMM/LRDIMM)
Media bays	One optional ODD bay for 2.5" model
Disk bays	Eight 2.5" or three 3.5" hard disk drives (HDDs)
RAID support	Integrated 6 Gbps hardware RAID-0, -1, -10; optional RAID-5, -50 or -6, -60
Power supply (std/max)	1/2 redundant 550 W ac, 750 W ac, or 750 W dc (model dependent)
Hot-swap components	Power supplies, fan modules and hard disk drives
Network interface	4 × 1 GbE (std.), 2 × 10 GbE embedded adapter (slotless opt.)/Trusted Platform Module
Expansion slots	2 PCIe 3.0 slots, optional 1 PCI-X
USB ports	2 (three for 3.5" model) front/4 back/1 internal
VGA ports	1 front/1 back
Maximum internal storage	Up to 8 TB (2.5" model) or 12 TB (3.5" model) SAS/SATA
Energy-efficiency compliance	Compliant with 80 PLUS® Platinum and ENERGY STAR® (model dependent)
Systems management	IBM IMM2 with optional FoD remote presence, Predictive Failure Analysis, Diagnostic LEDs, light path diagnostics panel, Automatic Server Restart, IBM Systems Director and Active Energy Manager™
Operating systems supported	Microsoft Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware vSphere
Limited warranty	3-year customer replaceable unit and onsite service, next business day 9×5, service upgrades available