HPE DL38X Gen10 Plus Maximum Performance Fan Kit http://www.hpe.com/servers/ashrae NOTE: Max Performance fan kit consists of 6 fans, these will need to replace all the standard fans in the unit, and fill all 6 fan cages. NOTE: The 12 LFF and 24 SFF models (including field upgrades to 24 SFF) will already include 6 Max Performance fans. NOTE: The Max Performance fan kit is needed to support certain Passive GPGPU (Graphics cards) configurations; or ASHRAE operating environments..