Here is the link to purchase the fan that you need. https://www.elecok.com/nidec-u40r05ms1a7-57a07a-5v-0-08a-4-wires-cooling-fan.html?admatchtype=e&addevice=c&adcampaignid=309346342&adgourpid=1142392954378789&ad_targetid=kwd-71399907693568:loc-190&adnetwork=o&addevicemodel={devicemodel}&adkeyword=u40r05ms1a7-57a07a&adplacement={placement}&adposition={adposition}. Good luck. Let us know if you have any additional problems. Thanks, KAT