2.5-inch drive bay chassis
Use the parts list in this section to identify each of the components that are available for server models with 2.5-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 8 x 2.5-inch drive cage | T1 |
| 5 Rear 4 x 2.5-inch drive cage | T1 | 6 7mm drive cage (1U) | T1 |
| 7 7mm drive cage (2FH + 7mm) | T1 | 8 7mm drive backplanes | T2 |
| 9 7mm drive bay filler | C | 10 7mm drive | T1 |
| 11 OCP module | T1 | 12 PCIe adapter | T1 |
| 13 Serial port module | T1 | 14 System fan | T1 |
| 15 System fan cage | T1 | 16 RAID flash power module | T1 |
| 17 Intrusion switch | T1 | 18 CFF RAID adapter/expander | T2 |
| 19 Right rack latch with front I/O module | T1 | 20 Standard right rack latch | T1 |
| 21 Left rack latch with VGA and external diagnostics ports | T1 | 22 Left rack latch with external diagnostics port | T1 |
| 23 Left rack latch with VGA port | T1 | 24 Standard left rack latch | T1 |
| 25 Chassis | F | 26 External diagnostics handset | T1 |
| 27 Front I/O module with integrated diagnostics panel | T1 | 28 Integrated diagnostics panel | T1 |
| 29 Front I/O module with front operator panel | T1 | 30 Security bezel | C |
| 31 2.5-inch drive | T1 | 32 2.5-inch drive fillers (1-bay, 4-bay, or 8-bay) | C |
| 33 Middle/Rear 4 x 2.5-inch drive backplane | T1 | 34 Front 24 x 2.5-inch expander backplane | T1 |
| 35 Rear 8 x 2.5-inch drive backplane | T1 | 36 Front 8 x 2.5-inch drive backplane | T1 |
| 37 CMOS battery (CR2032) | C | 38 Memory module | T1 |
| 39 Processor | F | 40 Heat sinks | F |
| 41 GPU air baffle filler | C | 42 Add-on air baffle (for GPU air baffle) | T1 |
| 43 GPU air baffle | T1 | 44 Mylar for standard air baffle fillernote1 | C |
| 45 Standard air baffle filler | C | 46 Standard air baffle | T1 |
| 47 M.2 drive backplane | T1 | 48 M.2 drive | T1 |
| 49 M.2 retainer clip | T1 | 50 Direct water cooling module | F |
| 51 Cold plate cover | C | 52 1FH riser cage for DWCM | T1 |
| 53 3FH riser cage for DWCM | T1 | 54 Hose holder | C |
| 55 Top cover mylarnote2 | T1 | 56 Middle drive cage | T1 |
| 57 4LP riser 3/4 cage | T1 | 58 Riser 3/4 card | T1 |
| 59 Riser 3 cage | T1 | 60 Riser 1 or ri ser 2 cage | T1 |
| 61 1U riser cage | T1 | 62 Riser card (LP) | T1 |
| 63 Riser 1 or riser 2 card | T1 | 64 Riser 3 card | T2 |
| 65 Firmware and RoT security module | F | 66 System I/O board | F |
| 67 MicroSD card | T1 | 68 Processor board | F |
| 69 Processor filler | C | 70 2U cable wall bracket | T1 |
| 71 Management NIC adapter | T1 | 72 Rear OCP interposer card | T1 |
| 73 Front OCP interposer card | T1 | 74 Riser 5 card | T2 |
| 75 Front adapter cage | 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.