OEM GPU Cooling Fan for ASUS ROG FX503 laptop, this is the cooling fan for GPU Graphics card. If your PC fan is running very loud or not functioning then a replacement may be needed. The fan uses an integrated flex cable to connect to the mainboard. The cable connects via 4-pin connector making it a plug and play replacement module, NO soldering is required. Specifications: Direct Current: DC 12V / 0.4A Color: Black Connection: 4-pin 4-wires Status: Brand New and Original Reference list of compatible with ASUS Laptop Models: - ROG Strix FX503 series: FX503VD FX503VD-EH73 FX503VD-NH76 FX503VD-WH51 - ROG Strix FX63V FZ63VM series: FX63VM FX63VM7300 FX63VM7700 - ROG Strix GL703 series: GL703VM Compatible Part Number (s): DFS602212M00T FK7W, FCN4VBKLFAJN2009B0CX Package Includes: 1x GPU Cooling Fan