This factory integrated model ships with:
2 x HP Smart Socket Guides for fast processor installation.
24 DIMM slots for RDIMM, LRDIMM and UDIMM Memory installation
1 FlexibleLOM connector
Smart Array P420i Controller w/ Zero Memory (ZM)
I/O slots - 3 Slots come standard:
Slot 1 - FL/FH x16 PCIe 3.0 (x16 connector)
Slot 2 - HL/FH x8 PCIe 3.0 (x8 connector)
Slot 3 - HL/FH x4 PCIe 2.0 (x8 connector)
Additional Slots may be added
System Fans - 4 (2 additional fans included with second processor)
Drive Cage - 25SFF (with built-in expander)
USB - 4 Rear, 1 Front, 1 Internal, 1 SD slot
HP iLO Management Engine (standard)
Part number: 665554-B21