the models would depend on your requirements. Pls let me know which requirements you need if available

For Server and workstation
Conformed to IPC 2U Type

Safety Approvals：CE, TUV, CB, CUL, FCC and BSMI
Multiple Protections Function：(OCP、OVP、UVP、OPP)
Dimension: 255* 100 *70mm
Output Capacity: 550Watts Continuous

Provide Dual +12V rails, for stability and safety
Low Ripple & Noise

Active PFC

Operation Temperature:0~50℃

60mm Low-Noise Fan
Life expectancy: MTBF >100,000 hours