Features: Aluminum and plastics material. Connector type: 4-pin 4-wires connector, no soldering is required. High quality, each fan is tested before shipment and works normally. Original fan, easy to install and remove. Precise adaptation, no for extra-operations required. brand new and high quality Specifications: Type :CPU GPU fan Material: metal Voltage: DC5V 0.5A Connection: 4-pin 4-wires Model：for PRO 14 M3400QA M3401Q K3400P M7400Q P/N: Package Includes: A/B/C (optional) A: 1PC x CPU Fan B: 1PC x GPU Fan C: 1Pair x CPU GPU Fan note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!