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Technical Data Sheet
451438-B21 ✓ Verified by PartsTable
HP · NETWORK · 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

The Cisco Catalyst Blade Switch 3120 series represent the next generation networking solution for blade server environments. With the Cisco Catalyst Blade Switch 3120 series switches, HP and Cisco introduce a technology unique to blade server enclosures that allows multiple switches to act as a single entity. This switch stacking technology takes the individual physical switches within a rack and treats them as one logical switch.

This innovation is the foundation of the switches' ability to simplify operations and management. Built on Cisco's proven hardware and IOS software, the Cisco Catalyst 3120 is engineered with unique technologies specifically designed to meet the rigors of the blade server infrastructure. Both switches deliver scalable, high-performance, highly resilient connectivity while supporting ongoing data center initiatives to reduce server infrastructure complexity, management and TCO.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-575-0010, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
NETWORK 3.5_SATA_HDD 451438-B21
NSN: 7025-01-575-0010
FSC: 7025
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
Form FactorBlade
NSN7025-01-575-0010
COMPONENT DIAGRAM
RELEASE LATCH 1GB 1GbE 7.2K 451438-B21 HP 1GbE INTERFACE INTERPOSER SAS drive in SATA tray? Check board compatibility 3.5" (101.6 x 146mm) LFF 3.5" DRIVE | 1GB | 1GbE 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 451438-B21 MFR HP
KEY FEATURES
1GbE Interface
1GB Capacity
UNIT DESIGN: RACK MOUNTED
TECHNICAL CHARACTERISTICS (FLIS)
UNIT DESIGNRACK MOUNTED
PART NAME ASSIGNED BY CONTROLLING AGENCYHP CISCO CATALYST 1GBE 3120G 4 PORT BLADE SWITCH G
SPECIAL FEATURESMEMORY: 256MB MAIN, 64MB FLASH MB
UNIT DESIGNRACK MOUNTED
PART NAME ASSIGNED BY CONTROLLING AGENCYHP CISCO CATALYST 1GBE 3120G 4 PORT BLADE SWITCH G
SPECIAL FEATURESMEMORY: 256MB MAIN, 64MB FLASH MB
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
451356-001Compatible
HP BL-c Switch Cisco Catalyst 3120G 1GbE RJ-45 4-Port Uplinks/1GbE 16-Port Downlinks/64Gb Stacking 2-Port Module
compatible
WS-CBS3120G-SCompatible
HP BL-c Switch Cisco Catalyst 3120G 1GbE RJ-45 4-Port Uplinks/1GbE 16-Port Downlinks/64Gb Stacking 2-Port Module
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 2
WS-CBS3120G-SSUBSTITUTE
HP BL-c Switch Cisco Catalyst 3120G 1GbE RJ-45 4-Port Uplinks/1GbE 16-Port Downlinks/64Gb Stacking 2-Port Module
HPE
451356-001SUBSTITUTE
HP BL-c Switch Cisco Catalyst 3120G 1GbE RJ-45 4-Port Uplinks/1GbE 16-Port Downlinks/64Gb Stacking 2-Port Module
HPE
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FREQUENTLY ASKED QUESTIONS
What is 451438-B21?
451438-B21 is a HP CISCO CATALYST 1GBE 3120G 4 PORT BLADE SWITCH manufactured by HP. It is classified as a NETWORK (3.5_SATA_HDD).
What parts can replace 451438-B21?
There are 2 known substitutes for 451438-B21: 451356-001, WS-CBS3120G-S. Substitute compatibility should be verified for your specific system.
What is the NSN for 451438-B21?
451438-B21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-575-0010. This indicates validated use in U.S. government and defense supply chains.
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