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400AEFN ✓ 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 Dell™ system with this 1 TB Hard Drive from Dell. It boasts a storage capacity of 1 TB, enabling users to store large amounts of data. This hard drive features a Serial Attached SCSI and it offers a maximum rotational speed of 7,200 RPM.

This product has been tested and validated on Dell systems and is compatible with select Dell Systems. It is supported by Dell Technical Support when used with a Dell system.

WHERE IT FITS
STORAGE_HDD→ 2.5_SAS_HDD→ 400AEFN
SPECIFICATIONS
TypeHDD
HDD size2.5"
HDD speed7200 RPM
InterfaceNL-SAS
HDD capacity1 TB
Component forServer/workstation
Operating voltage5 V
Quantity per pack1 pc(s)
HDD interface transfer rate6 Gbit/s
COMPONENT DIAGRAM
LABEL 1TB 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 1TB | 7200 / 10K / 15K RPM FORM FACTOR — 2.5" Hot-swap, carrier-specific MOUNTING — 4x M3 bottom Standard SFF screw pattern TITLE HDD DRIVE PN 400AEFN MFR DELL 1TB NL-SAS
KEY FEATURES
•
1TB Capacity
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
342-3808Compatible
Dell 1Tb SAS 6G 7.2K SFF DP SED FIPS 140-2 HDD in LFF R/T-Series Tray - SPN
compatible
400-ACXECompatible
Dell 1Tb SAS 6G 7.2K SFF DP SED FIPS 140-2 HDD in LFF R/T-Series Tray - SPN
compatible
400-AEFMCompatible
Dell 1Tb SAS 6G 7.2K SFF DP SED FIPS 140-2 HDD in LFF R/T-Series Tray - SPN - Gen 13
compatible
HWTJPCompatible
Dell 1Tb SAS 6G 7.2K SFF DP SED FIPS 140-2 HDD in LFF R/T-Series Tray - MPN - Gen 13
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 4
HWTJPSUBSTITUTE
Dell 1Tb SAS 6G 7.2K SFF DP SED FIPS 140-2 HDD in LFF R/T-Series Tray - DPN - Gen 13
DELL
342-3808SUBSTITUTE
Dell 1Tb SAS 6G 7.2K SFF DP SED FIPS 140-2 HDD in LFF R/T-Series Tray - DPN - Gen 13
DELL
400-ACXESUBSTITUTE
Dell 1Tb SAS 6G 7.2K SFF DP SED FIPS 140-2 HDD in LFF R/T-Series Tray - DPN - Gen 13
DELL
400-AEFMSUBSTITUTE
Dell 1Tb SAS 6G 7.2K SFF DP SED FIPS 140-2 HDD in LFF R/T-Series Tray - DPN - Gen 13
DELL
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FREQUENTLY ASKED QUESTIONS
What is 400AEFN?
400AEFN is a 1TB NL-SAS manufactured by DELL. It is classified as a STORAGE_HDD (2.5_SAS_HDD).
What parts can replace 400AEFN?
There are 4 known substitutes for 400AEFN: 342-3808, 400-ACXE, 400-AEFM and 1 more. Substitute compatibility should be verified for your specific system.
Is 400AEFN still available?
400AEFN is currently Unknown.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026