The Lenovo S500 and ThinkStation P310 SFF Power Supply Unit (PSU) is a high-efficiency, small-profile internal power module. It is precision-engineered to meet the strict physical space constraints of Lenovo’s small form factor (SFF) corporate computing systems and entry-level business workstations.

• Brand: Lenovo (Original Equipment Manufacturer via FSP, AcBel, or Lite-On)
• Manufacturer Model Numbers: HK310-71FP, PCB020, FSP210-20TGB, SP50H29462
• Lenovo Part / FRU Numbers: 00PC722, 00PC746, 54Y8903, SP50H29454
• Max Output Power: 210 Watts (Also backwards compatible with 180W configurations)
• Form Factor: Proprietary Lenovo SFF / Slimline TFX Layout
• Efficiency Rating: 80 PLUS Bronze Certified (Up to 85% energy efficiency under typical loads)
• Input Voltage Range: 100V – 240V AC (Automatic Global Auto-Sensing Switch)
• Input Frequency: 50Hz – 60Hz

• 1 x 10-Pin Proprietary Lenovo Main Motherboard Power Connector
• 1 x 4-Pin ATX 12V CPU Power Connector

• Lenovo S Series: S500 SFF (Machine Types: 10HS, 10HT)
• Lenovo ThinkStation Series: ThinkStation P310 SFF Workstation
• Lenovo ThinkCentre Series: M700 SFF, M800 SFF, M900 SFF 

• Over-Voltage Protection (OVP): Seals delicate workstation silicon against sudden electrical grid anomalies.
• Over-Current Protection (OCP): Automatically safely powers down lines if current draw surpasses limits.
• Short-Circuit Protection (SCP): Instant power-kill safety logic prevents system board damage during shorts.
• Active Power Factor Correction (PFC): Reduces harmonic distortion while optimizing overall energy consumption.