Table 26. Riser cages (continued)
Server 
configuration
Riser 1 cage Riser 2 cage Riser 3 cage or 4LP 
riser 3/4 cage
Riser 5 cage
Configuration with 12 
PCIe slots
•  3-slot riser cage
•  3-slot riser cage
•  4LP riser 3/4 cage
LP: low profile
•  Riser 5 cage
Configuration with a 
4 x 2.5-inch rear 
drive cage
•  3-slot riser cage
•  3-slot riser cage
N/A N/A
Configuration with an 
8 x 2.5-inch rear 
drive cage
•  3-slot riser cage
•  1-slot riser cage
N/A N/A
Configuration with a 
2 x 3.5-inch rear 
drive cage
•  3-slot riser cage
•  1-slot riser cage
N/A N/A
Configuration with a 
4 x 3.5-inch rear 
drive cage
•  1-slot riser cage
•  1-slot riser cage
N/A N/A
Remove a rear riser assembly
Follow instructions in this section to remove a rear riser assembly. 
About this task
The server supports different types of riser cages (see 
Table 26 “Riser cages” on page 231). This topic uses 
the 3FH riser 1 cage and Gen 4 riser 3 cage as an example for illustration. The replacement procedure is the 
same for other riser cages.
Attention: 
232 ThinkSystem SR665 V3 User Guide