UCS B200 M4 Blade Server Installation and Service Note

b200 slot The slot 1 (blue) DIMM slots are always located farther away from a CPU than the corresponding slot 2 (black) slots. Slot 1 slots (blue). 24 DIMM slots for industry-standard DDR4 memory at speeds up to 2933 MHz, with up to 3 TB of total memory when using 128-GB DIMMs. Up to 12 DIMM slots ready

b200m, The Cisco UCS B200 M5 includes support for the following: 2nd Generation Intel® Xeon® Scalable Processors. 2933-MHz DDR4 memory DIMMs. 128 GB, 256 GB, 512 GB Intel®.