ThinkSystem ST650 V2 HW RAID/HBA Adapter Cable Kit
This option kit comes with the following components.

1 One Mini-SAS x4*2 to SlimSAS x4*2 (590 mm/590 mm)
2 One Mini-SAS x4*2 to SlimSAS x4*2 (840 mm/840 mm)
3 One SlimSAS x8 to SlimSAS x4*2 (590 mm/590 mm)
4 One SlimSAS x8 to SlimSAS x4*2 (840 mm/840 mm)
5 One Mini-SAS x4*2 to SlimSAS x8 (640 mm)
6 One SlimSAS x8 to SlimSAS x8 (720 mm)
7 One SlimSAS x8 to SlimSAS x8 (880 mm)
See Install server hardware options for more information to install the option kit.