Table 18. Parts list of the 4-DW GPU Model (2.5-inch drive configuration) (continued)
Index Description
Tier 1 CRU Tier 2 CRU
FRU
Consuma-
ble and 
Structural 
part
20
OCP Ethernet adapter filler
√
21
OCP Ethernet adapter
√
22
Front I/O expansion board
√
23
2.5-inch drive backplane
√
24
2.5-inch drive cage
√
25
2.5-inch drive filler (8-bay)
√
26
2.5-inch drive filler (4-bay)
√
27
2.5-inch drive filler (1-bay)
√
28
2.5-inch hot-swap drive
√
29
Front panel
√
30
Front I/O module
√
31
External LCD diagnostics handset
√
32
Double-wide GPU
√
33
GPU adapter link bridge
√
34
Four PCIe x16 slot switched PCIe distribution 
board
√
35
Four PCIe x16 slot PCIe distribution board
√
36
Cable
√
37
Fan cage
√
38
Fan
√
39
Air baffle
√
40
M.2 drive retainer
√
41
M.2 drive backplane
√
42
M.2 drive
√
42 ThinkSystem SR670 V2 Maintenance Manual