The CPU fan is in good working condition as pictured and tested working. Fan uses 4-pin connector.
HP Z400 Z600 Z800 Processor Socket LGA1366 CPU Heatsink Fan Assembly 463990-001
Intel Socket LGA 1155/1156 4-Pin Intel CPU Fan Heatsink Cooler / E97379-003
GENUINE INTEL HEATSINK & FAN
Genuine Intel CPU Heatsink and Fan Cooler set for LGA 1155/1156 4-Pin E97379-001
Genuine Intel CPU Cooler E97378-003 Aluminium+ Copper LGA 1150 1151 1155 1156
MSI MPG CORELIQUID K240 V2 AIO CPU Liquid Cooler - LCD Pump with 60mm Fan, 2 x 120mm ARGB Fans, Evaporation-Proof Tubing, GI Cooling & Mystic Light Software Support - AMD & Intel Socket Compatible