7  SR645 STD heat sink (2)
Notes: 
•  All cables are not used in certain configurations.
•  Single-wide GPU adapters are powered through the riser card and do not require an extra power cable for 
powering.
For information about installing the option product, refer to the Server hardware setup or Internal cable 
routing chapter in the Setup Guide, or go to: 
https://thinksystem.lenovofiles.com/help/topic/7D2W/server_setup.html or  
https://thinksystem.lenovofiles.com/help/topic/7D2W/internal_cable_routing.html.
To get the latest technical information and download device drivers and updates, go to: 
https://datacentersupport.lenovo.com/us/en/products/servers/thinksystem/sr665/7d2w/downloads/driver-list.
Backplane
This part describes the following option kits: 
•  “ThinkSystem 2U 12 x 3.5" Backplane option kit” on page 2
•  “ThinkSystem 2U 8 x 3.5" SAS/SATA Backplane option kit” on page 4
•  “ThinkSystem 2U 8 x 2.5" Backplane option kit” on page 5
•  “ThinkSystem SR665 Middle 8 x 2.5" Backplane option kit” on page 7
•  “ThinkSystem SR665 Middle 4 x 3.5" SAS/SATA Backplane option kit” on page 8
•  “ThinkSystem 2U Rear 8 x 2.5" SAS/SATA Backplane option kit” on page 9
•  “ThinkSystem 2U Rear 4 x 3.5" SAS/SATA Backplane option kit” on page 10
•  “ThinkSystem 2U Rear 2 x 3.5" SAS/SATA Backplane option kit” on page 11
•  “ThinkSystem 2U Rear 4 x 2.5" SAS/SATA Backplane option kit” on page 12
•  “ThinkSystem SR665 Rear 2 x 7mm RAID enablement kit” on page 32
ThinkSystem 2U 12 x 3.5" Backplane option kit
This topic provides important information about ThinkSystem 2U 12 x 3.5" Backplane option kit, which 
includes the following types. 
•  ThinkSystem 2U 12 x 3.5" SAS/SATA Backplane option kit
•  ThinkSystem 2U 12 x 3.5" AnyBay Backplane option kit
The option package contains the following items:
2
ThinkSystem SR665 System Option Manual