SL Power 55W Open Frame AC/DC Switching Power Supply GPC55F 740617251463 the X550-T2 uses the newer

the X550-T2 uses the newer Intel X550 controller with improved performance characteristics

5-inch SED (Self-Encrypting Drive) Large Form Factor Nearline hard drive for enterprise servers and storage arrays

The Lenovo ThinkServer RAID 520i PCIe Adapter (4XC0G88840) is an entry-level 12Gb/s SAS/SATA RAID controller PCIe expansion card for Lenovo ThinkServer RD350

Brand: Delta / IBM

SL Power 55W Open Frame AC/DC Switching Power Supply GPC55F 740617251463 the X550-T2 uses the newerThe SL Power GPC55F is a genuine 55W open frame AC DC switching power supply for industrial automation, medical devices, and communications equipment requiring a compact 55W regulated open frame PSU with wide input voltage range, built in OVP OCP short circuit protection, and compliance with international safety standards. Part Number: GPC55F Output Power: 55W Type: Open Frame AC DC Switching Power Supply Protections: Overvoltage (OVP), overcurrent