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Technical Data Sheet
PartsTable / STORAGE_HDD / EM161AA
EM161AA ✓ Verified by PartsTable
HP · STORAGE_HDD · 3.5_SATA_HDD
WHAT YOU NEED TO KNOW
SAS backplane supports SATA, not vice versa NL-SAS = SAS protocol at nearline (7.2K) speed — NOT SATA
Gen8 LFF tray ≠ Gen10 tray — different screw holes
PRODUCT OVERVIEW

This powerful enhancement provides ample additional memory for handling complex graphic or visualisation requirements.<br>- Significantly improves start-up time and application speeds;<br>- Work faster and smarter by running multiple complex programs simultaneously;<br>- Optimised power and performance for viewing multiple displays. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-574-8387, indicating validated use in U.S. government and defense logistics supply chains.

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→ 3.5_SATA_HDD→ EM161AA
NSN: 7025-01-574-8387
FSC: 7025
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
materialPLASTIC
overall_width4.370 INCHES NOMINAL IN
overall_height2.500 INCHES NOMINAL IN
overall_length6.750 INCHES NOMINAL IN
special_featuresMULTI-DISPLAY PRODUCTIVITY, 2GB(1X2GB) DDR2-667 ECC FBD GB
end_item_identificationMODEL PC2-5300F
NSN7025-01-574-8387
COMPONENT DIAGRAM
RELEASE LATCH — NL-SAS 7.2K EM161AA HP NL-SAS INTERFACE INTERPOSER SAS drive in SATA tray? Check board compatibility 3.5" (101.6 x 146mm) LFF 3.5" DRIVE | — | NL-SAS 7.2K NL-SAS uses SAS protocol at 7.2K RPM | SAS backplane supports SATA, not reverse Tray generation matters | Gen8 LFF tray differs from Gen10 TITLE LFF 3.5" DRIVE PN EM161AA MFR HP
KEY FEATURES
•
MATERIAL: PLASTIC
TYPICAL APPLICATIONS
  • Server memory expansion for virtualization workloads
  • Database performance optimization (in-memory computing)
  • VDI and remote desktop session hosting
  • High-performance computing (HPC) clusters
  • Mail server and collaboration platform scaling
  • Application server tier expansion
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH4.370 INCHES NOMINAL IN
OVERALL HEIGHT2.500 INCHES NOMINAL IN
END ITEM IDENTIFICATIONMODEL PC2-5300F
OVERALL LENGTH6.750 INCHES NOMINAL IN
MATERIALPLASTIC
SPECIAL FEATURESMULTI-DISPLAY PRODUCTIVITY, 2GB(1X2GB) DDR2-667 ECC FBD GB
OVERALL WIDTH4.370 INCHES NOMINAL IN
OVERALL HEIGHT2.500 INCHES NOMINAL IN
END ITEM IDENTIFICATIONMODEL PC2-5300F
OVERALL LENGTH6.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
465383-001Compatible
HP 2Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 240-Pin DIMM - Intel - WS
compatible
398707-551Compatible
HP 2Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 240-Pin DIMM - Intel - WS
compatible
398707-751Compatible
HP 2Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 240-Pin DIMM - Intel - WS
compatible
419005-001Compatible
HP 2Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 240-Pin DIMM - Intel - WS
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 4
398707-551SUBSTITUTE
HP 2Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 240-Pin (1x2Gb) Memory Kit - Intel - WS
HP
398707-751SUBSTITUTE
HP 2Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 240-Pin (1x2Gb) Memory Kit - Intel - WS
HP
419005-001SUBSTITUTE
HP 2Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 240-Pin (1x2Gb) Memory Kit - Intel - WS
HP
465383-001SUBSTITUTE
HP 2Gb PC2-5300F 667Mhz ECC FBD DR x4 CL5 240-Pin (1x2Gb) Memory Kit - Intel - WS
HP
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FREQUENTLY ASKED QUESTIONS
What is EM161AA?
EM161AA is a MEMORY UNIT,DATA STORAGE manufactured by HP. It is classified as a STORAGE_HDD (3.5_SATA_HDD).
What parts can replace EM161AA?
There are 4 known substitutes for EM161AA: 465383-001, 398707-551, 398707-751 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for EM161AA?
EM161AA is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-574-8387. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026