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Technical Data Sheet
PartsTable / STORAGE_HDD / 400AJRX
400AJRX ✓ Verified by PartsTable
DELL · STORAGE_HDD · 2.5_SAS_HDD
WHAT YOU NEED TO KNOW
SAS HDD backplane accepts SATA drives, SATA backplane does NOT accept SAS 2.5" SAS HDDs come with or without carrier/tray — ALWAYS ASK
ALWAYS confirm carrier/tray PN — server-specific trays vary by generation
PRODUCT OVERVIEW

Increase the storage capacity of your system with the 300GB Hard Drive from Dell. Offering a rotational speed of 15000 RPM, this drive provides fast disk access. Key specifications include Type: HDD, HDD size: 2.5", HDD speed: 15000 RPM, Interface: SAS, HDD capacity: 300 GB, Component for: Server/workstation.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
STORAGE_HDD→ 2.5_SAS_HDD→ 400AJRX
SPECIFICATIONS
TypeHDD
HDD size2.5"
HDD speed15000 RPM
InterfaceSAS
HDD capacity300 GB
Component forServer/workstation
Quantity per pack1 pc(s)
HDD interface transfer rate12 Gbit/s
Harmonized System (HS) code84717050
COMPONENT DIAGRAM
LABEL P/N S/N HDD SAS 12Gb/s 69.85 mm (2.75") 100.0 mm 2.5" HDD — MECHANICAL Spinning disk, hot-swap SAS 12Gb/s — Dual-port 7200 / 10K / 15K RPM FORM FACTOR — 2.5" Hot-swap, carrier-specific MOUNTING — 4x M3 bottom Standard SFF screw pattern TITLE HDD DRIVE PN 400AJRX MFR DELL 400-AJRX
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
18C6PCompatible
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - MPN - Gen 13
compatible
400-AJRJCompatible
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - SPN
compatible
400-AJRZCompatible
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - SPN
compatible
DNMPRCompatible
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - MPN
compatible
M3MH7Compatible
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - MPN - Gen 13
compatible
THFR5Compatible
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - MPN
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 7
DNMPRSUBSTITUTE
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - DPN
DELL
M3MH7SUBSTITUTE
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - DPN
DELL
THFR5SUBSTITUTE
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - DPN
DELL
18C6PSUBSTITUTE
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - DPN
DELL
400-AJRJSUBSTITUTE
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - DPN
DELL
400-AJRRSUBSTITUTE
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - DPN
DELL
400-AJRZSUBSTITUTE
Dell 300Gb SAS 12G 15K SFF HDD in LFF R/T-Series Tray - DPN
DELL
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FREQUENTLY ASKED QUESTIONS
What is 400AJRX?
400AJRX is a 400-AJRX manufactured by DELL. It is classified as a STORAGE_HDD (2.5_SAS_HDD).
What parts can replace 400AJRX?
There are 12 known substitutes for 400AJRX: 18C6P, 400-AJRJ, 400-AJRZ and 9 more. Substitute compatibility should be verified for your specific system.
Is 400AJRX still available?
400AJRX is currently Unknown.
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Last verified: July 2026