https://www.intel.com/content/www/us/en/content-details/811949/sc5300-pcn-105669-01-fyi-class-2-adding-notch-to-metal-bracket-between-fans-to-better-accommodate-cable-routing-between-hard-drive-bays.html
SC5300, PCN 105669-01, FYI, Class 2: Adding notch to metal bracket between fans to better...
Server Chassis, Product Design