| Model | Lenovo ThinkSystem ST550 |
| Form Factor/Height | 4U rackable tower |
| Number of Processors | Up to 2x Intel® Xeon® Platinum processors, up to 125W |
| Memory | Up to 1.5TB† in 12x DIMM slots using 128GB DIMMs; 2666MHz TruDDR4 |
| Expansion Slots | Up to 6x PCIe 3.0 (with 2x processors) |
| Drive Bays | Up to 16 SFF (including 4 NVMe) or 8 LFF bays; PLUS up to 4 SFF (in optical bay) & 2x internal M.2 boot |
| HBA/RAID Support | Software RAID (4x ports) std; opt. hardware RAID (up to 24x ports); up to 16-port HBAs |
| Security and Reliability Features | Lockable security bezel, Kensington lock slot, chassis intrusion switch, TPM 1.2/2.0, Predict Failure Analysis |
| HS/redundant drives, redundant PSUs, and 45°C continuous operation | |
| Network Interface | 2x 1GbE ports std; optional 1GbE, 10GBASE-T, and 10Gb SFP+; 1x dedicated 1GbE management port |
| Power | 1x 450W 80 PLUS Gold (fixed); or 2x 550W/750W/1100W 80 PLUS Platinum (hot-swap/redundant N+1); |
| or 2x 750W 80 PLUS Titanium (hot-swap/redundant) | |
| Systems Management | XClarity Controller embedded management, XClarity Administrator centralized infrastructure delivery |
| XClarity Integrator plugins, XClarity Energy Manager centralized server power management | |
| OSes Supported | Microsoft Windows Server, SLES, RHEL, VMware vSphere. Visit lenovopress.com/osig for more information |
| Featured Options | 3.5-inch 10TB 7,200rpm SAS 12Gb Hot-Swap 512e HDD |
| 7XB7A00046 | |
| High-capacity drives for enterprise- class applications | |
