Component identification Front panel components Front panel LEDs and buttons Rear panel components Rear panel LEDs System board components Processor, heatsink, and socket components Drives Fan bay numbering Drive box identification Drive bay numbering Riser components HPE Flex Slot Power Supply with Integrated Battery Backup Unit components and LED HPE 12G SAS Expander Card port numbering HPE Smart Array P824i-p MR Gen10 Controller HPE InfiniBand HDR/Ethernet 940QSFP 56x16 adapter LEDs DSC-25 2-port SFP28 card ports and LEDs