ThinkSystem 2U 8 x 2.5" Backplane option kit
This topic provides important information about ThinkSystem 2U 8 x 2.5" Backplane option kit, which 
includes the following types. 
•  ThinkSystem 2U 8 x 2.5" SAS/SATA Backplane option kit
•  ThinkSystem 2U 8 x 2.5" AnyBay Backplane option kit
•  ThinkSystem 2U 8 x 2.5" NVMe Backplane option kit
The option package contains the following items.
1  2.5" 8-bay backplane: SAS/SATA, NVMe, or AnyBay(1)
2  1 x 2.5" HDD filler (4)
3  4 x 1 2.5" HDD filler (1)
4  Drive sequence label (1) + Drive type label (2 or 3) 
Notes: Different drive labels are available for different backplane models. 
Chapter 1 System Options 5