Mid-Tower

1. Single socket H2 (LGA 1155) supports Intel® Xeon® E3-1200 & v2 series, 2nd Gen Core i3 processors* 2. Up to 32GB DDR3 ECC 1333MHz / 1600MHz* UDIMMs in 4 sockets 3. 2 PCI-E 3.0* x8 and 1 PCI-E 2.0 x4 in x8 Expansion Slots 4. Intel® 82579LM and 82574L, 2x Gigabit Ethernet LAN ports 5. 9x USB 2.0 ports (2 rear + 6 via header + 1 Type-A) 6. 2x 5.25" external drive bays, 4x 3.5" internal drive bays, 1x 3.5" external drive bay (OEM), 90° rotating hard drive cage 7. 300W High-efficiency Power Supply

1. Dual socket R (LGA 2011) supports Intel® Xeon® processor E5-2600 and E5-2600 v2 family† 2. Up to 1TB ECC DDR3, up to 1866MHz; 16x DIMM slots 3. Expansion slots: 3 (x16) PCI-E 3.0, 2 (x8) PCI-E 3.0 & 1 (x4) PCI-E 3.0 4. Intel® i350 Dual port Gigabit Ethernet 5. 2x SATA3 and 8x SATA2 ports 6. 4x 3.5" SATA HDD bays, 90° rotating hard drive cage, 4x 2.5" internal HDD/SSD bays (opt.) 7. 900W High Efficiency Power Supply Gold Level Certified

1. Mid-Tower Chassis 2. 4x 3.5" Internal HDD Drive Bays 3. 865W Silver Level Certified High-Efficiency Power Supply

1. Single socket R (LGA 2011) supports Intel® Xeon® processor E5-2600/1600 and E5-2600/1600 v2 family† 2. Up to 512GB ECC DDR3, up to 1866MHz; 8x DIMM slots 3. Expansion slots: 2 PCI-E 3.0 x16, 1 PCI-E 3.0 x4 (in x8), 1 PCI-E 2.0 x4 (in x8), 1x PCI-32 4. Intel® 82579LM and 82574L, 2x Gigabit Ethernet LAN ports 5. 4 USB 3.0 and 14 USB 2.0 ports 6. 4x 3.5" SATA3 HDD bays, 90° rotating hard drive cage, 4x 2.5" internal HDD/SSD bays (opt.) 7. 900W Gold Level Power Supply

1. Single Socket H4 (LGA 1151) supports Intel® Xeon® processor E3-1200 v6/v5, Intel® 7th/6th Gen. Core™ i7/i5/i3 series 2. Intel® C236 chipset 3. Up to 64GB Unbuffered ECC/non-ECC UDIMM DDR4 2400MHz; 4 DIMM slots 4. 2 PCI-E 3.0 x16 (x16/NA or x8/x8), 3 PCI-E 3.0 x1, 2 PCI 32-bit slots 5. 1 DVI-D, 1 HDMI, 1 display port, triple display capable, ALC1150 HD Audio, 2 COM, 2 GbE LAN, 2 USB 3.0 + 2 USB 2.0 (front) 6. 4 internal 3.5" HDD bays 90° rotatable HDD cage design 4 internal 2.5" SATA HDD (opt.) 7. 668W Platinum Level Power Supply (Updated for 2021 Version)

1. Single Socket R4 (LGA 2066) supports Intel® Xeon® W-2200 processor, Intel® Xeon® W-2100 processor 2. Intel® C422 chipset 3. Up to 512GB reg. ECC LRDIMM, up to DDR4-2666MHz; 8 DIMM slots 4. 3 PCI-E 3.0 x16 (8/16/16, 48 lanes), 1 PCI-E 3.0 x4, M.2 Interface: 2 PCI-E 3.0 x4 M.2 Form Factor: 22110/2280 M.2 Key: M-Key (RAID 0,1 support) U.2 Interface: 2 PCI-E 3.0 x4 5. ALC 1220 7.1 HD Audio, 1 COM, 5GbE and GbE LAN, 2 USB 3.0 (front) 6. 4 internal 3.5" drive bays 7. 900W High Efficiency Power Supply

1. Single socket H3 (LGA 1150) supports Intel® Xeon® E3-1200 v3, 4th gen. Core i3, Pentium V, Celeron processors 2. Intel® C222 Express PCH 3. Up to 32GB DDR3 ECC 1600MHz UDIMMs in 4 sockets 4. 1 (x8) PCI-E 3.0 in x16, 1 (x8) PCI-E 3.0, and 1 (x4) PCI-E 2.0 in x8 slots 5. I/O Ports: 1 VGA, 2 COM, 2 GbE LAN, dedicated IPMI, 2 USB 2.0 (front) 6. 4x 3.5" tool-less HDD trays + 2x 5.25" drive bays 7. 300W High-efficiency Power Supply