3.5-inch drive bay chassis
Use the parts list in this section to identify each of the components that are available for server models with 3.5-inch front drive bays.
Go to Lenovo Data Center Support and navigate to the support page for your server.
Click .
Enter the serial number to view a listing of parts for your server.
It is highly recommended that you check the power summary data for your server using Lenovo Capacity Planner before purchasing any new parts.

T1: Tier 1 customer replaceable unit (CRU). Replacement of Tier 1 CRUs is your responsibility. If Lenovo installs a Tier 1 CRU at your request with no service agreement, you will be charged for the installation.
T2: Tier 2 customer replaceable unit (CRU). You may install a Tier 2 CRU yourself or request Lenovo to install it, at no additional charge, under the type of warranty service that is designated for your server.
F: Field replaceable unit (FRU). FRUs must be installed only by trained service technicians.
C: Consumable and Structural parts. Purchase and replacement of consumable and structural parts (components, such as a filler or bezel) is your responsibility. If Lenovo acquires or installs a structural component at your request, you will be charged for the service.
| Description | Type | Description | Type |
|---|---|---|---|
| 1 Top cover | T1 | 2 Rear wall brackets | T1 |
| 3 Power supply unit | T1 | 4 Rear 4 x 3.5-inch drive cage | T1 |
| 5 Rear 4 x 2.5-inch drive cage | T1 | 6 Rear 2 x 3.5-inch drive cage | T1 |
| 7 7mm drive cage (2FH + 7mm) | T1 | 8 7mm drive cage (1U) | T1 |
| 9 7mm drive backplanes | T2 | 10 7mm drive bay filler | C |
| 11 7mm drive | T1 | 12 OCP module | T1 |
| 13 Serial port module | T1 | 14 PCIe adapter | T1 |
| 15 RAID flash power module holder | T1 | 16 RAID flash power module | T1 |
| 17 System fan cage | T1 | 18 System fan | T1 |
| 19 Intrusion switch | T1 | 20 Right rack latch with front I/O module | T1 |
| 21 Standard right rack latch | T1 | 22 Left rack latch with VGA and external diagnostics ports | T1 |
| 23 Left rack latch with external diagnostics port | T1 | 24 Left rack latch with VGA port | T1 |
| 25 Standard left rack latch | T1 | 26 External diagnostics handset | T1 |
| 27 Chassis | F | 28 Security bezel | C |
| 29 3.5-inch drive fillers (4-bay) | C | 30 3.5-inch drive fillers (1-bay) | C |
| 31 3.5-inch drive | T1 | 32 Middle/Rear 4 x 2.5-inch drive backplane | T1 |
| 33 Front 8 x 3.5-inch drive backplane | T1 | 34 Front 12 x 3.5-inch drive backplane: | T1 |
| 35 Rear 4 x 3.5-inch drive backplane | T1 | 36 Rear 2 x 3.5-inch drive backplane | T1 |
| 37 CMOS battery (CR2032) | C | 38 Memory module | T1 |
| 39 Processor | F | 40 Heat sinks: | F |
| 41 M.2 drive backplane | T1 | 42 M.2 drive | T1 |
| 43 M.2 retainer clip | T1 | 44 GPU air baffle filler | C |
| 45 Add-on air baffle (for GPU air baffle) | T1 | 46 Mylar for standard air baffle fillernote1 | C |
| 47 Standard air baffle filler | C | 48 GPU air baffle | T1 |
| 49 Direct water cooling module | F | 50 Cold plate cover | C |
| 51 1FH riser cage for DWCM | T1 | 52 3FH riser cage for DWCM | T1 |
| 53 Hose holder | C | 54 Standard air baffle | T1 |
| 55 Middle 8 x 2.5-inch drive cage | T1 | 56 Middle 4 x 3.5-inch drive cage | T1 |
| 57 2U cable wall bracket | T1 | 58 Processor filler | C |
| 59 Processor board | F | 60 MicroSD card | T1 |
| 61 System I/O board | F | 62 Firmware and RoT security module | F |
| 63 Riser 3/4 card | T1 | 64 4LP riser 3/4 cage | T1 |
| 65 Riser 3 cage | T1 | 66 Riser 1 or riser 2 cage | T1 |
| 67 1U riser cage | T1 | 68 Riser 3 card | T2 |
| 69 Riser 1 or riser 2 card | T1 | 70 Riser card (LP) | T1 |
| 71 Management NIC adapter | T1 |
The mylar for standard air baffle filler is needed only for configurations with DWCM. For details, see Install the air baffle.
The top cover mylar is needed only for configurations with a front retimer card. For details, see Install the top cover.