400-BDBS: Dell BOSS-S1/S2 M.2 480GB SATA 6Gb/s Enterprise Solid State Drive
Also listed as: 0M43NP, M43NP · made by Micron
The Dell 400-BDBS is a Dell BOSS-S1/S2 M.2 480GB SATA 6Gb/s Enterprise Solid State Drive providing hardware RAID 1 operating system boot redundancy for Dell PowerEdge R750, R650, R760, R660 servers.
Specifications
| Part number | 400-BDBS |
|---|---|
| Brand | Dell |
| Made by | Micron |
| Type | Boot devices |
| Other numbers | 0M43NP, M43NP |
| Status | current |
| Capacity (GB) | 480 |
| Interface | SATA 6Gb/s M.2 2280 |
| Form factor | M.2 2280 Card |
| Endurance | Boot-optimized enterprise endurance |
| Speed | 6Gb/s SATA |
About the 400-BDBS
The Dell 400-BDBS is a Dell BOSS-S1/S2 M.2 480GB SATA 6Gb/s Enterprise Solid State Drive engineered for dedicated hardware RAID 1 operating system boot storage. Supporting dual M.2 SATA solid-state drives, the 400-BDBS offloads hypervisor and OS boot volumes from front storage bays, ensuring uninterrupted host booting independent of primary data storage pools.
Compatibility
Designed for Dell PowerEdge servers including R750, R650, R760, R660, the 400-BDBS installs into dedicated chassis boot bays or PCIe slots. The 400-BDBS supports M.2 SATA SSDs configured in hardware RAID 1 or pass-through mode, with validated driver support across VMware ESXi, Linux, and Windows Server.
How to identify a genuine unit
Genuine Dell units display a serialized label showing DP/N 0M43NP, BOSS controller branding, and PCIe certification markings. In iDRAC Storage inventory, the 400-BDBS controller reports as a recognized Dell boot adapter with drive status, RAID 1 mirror state, and firmware revision.
Buying used
When evaluating a pre-owned 400-BDBS, inspect the M.2 card slots, screw retention posts, and gold edge contacts for physical damage. Confirm that the hot-plug drive carriers for the 400-BDBS slide smoothly, and verify in iDRAC that both M.2 SSDs initialize in a synchronized RAID 1 volume.
Fits these models
- Dell PowerEdge R750
- Dell PowerEdge R650
- Dell PowerEdge R760
- Dell PowerEdge R660
- Dell PowerEdge R740
- Dell PowerEdge R640
Equivalent part numbers
- Micron 5300 PRO M.2 480GB Micron 5300 PRO M.2 SATA Enterprise SSD OEM base
FAQ
Does this M.2 drive fit into the hot-plug BOSS-S2 sleds on PowerEdge R750?
Yes, standard M.2 2280 form factor drives install directly into Dell BOSS-S2 hot-plug drive carrier sleds.
Can two 480GB drives replace two 240GB drives in an existing BOSS array?
Yes, you can replace drives one by one and rebuild, then expand the virtual disk volume in BIOS or OS.
Buying or selling 400-BDBS?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Dell 480GB M.2 SATA Enterprise SSD for BOSS Specifications, checked 2026-10-27