b.  “Install the 7mm drive cage” on page 211
c.  “Rear drive backplane and drive cage replacement” on page 213
d.  “Install the top cover” on page 278
2.  Complete the parts replacement. See “Complete the parts replacement” on page 279.
Middle drive cage and drive backplane replacement
Follow instructions in this section to remove and install the middle drive cage and drive backplanes.
Depending on the server configurations, the server supports one of the following middle drive cages. For 
detailed information, see 
“Technical rules” on page 51.
Drive cage type Backplane type
Middle 2.5-inch 8-bay drive cage 
•  Two 2.5-inch SAS/SATA 4-bay backplanes
•  Two 2.5-inch NVMe 4-bay backplanes
Middle 3.5-inch 4-bay drive cage 
One 3.5-inch SAS/SATA 4-bay backplane
•  “Remove the middle drive cage and drive backplanes” on page 162
•  “Install the middle drive backplanes and drive cage” on page 165
Remove the middle drive cage and drive backplanes
Follow instructions in this section to remove the middle drive cage and drive backplanes.
162 ThinkSystem SR665 V3 User Guide