for NMB 4715FS-23T-B50 cooling fan,12038 AXIAL Fan Fan Model: 4715FS-23T-B50 The 4715FS-23T-B50 Cooling Fan Features, Voltage: 230V AC, 50/60Hz, Size: 120x120x38mm/4.72'L x 4.72'W x 1.49'H, Connector: 2-pin BTH, Cooling method: Air, Color: Black, Speed: 1800rpm Original parts solve machine problems. For replacing damaged cooling fans Our 4715FS-23T-B50 Fan Unlimited return and refund service in 365 Days. If you have any query, please feel free to contact us, We will reply within 12 hours on working days, thanks!