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PartsTable / MEMORY / WS-CBS3120G-S
WS-CBS3120G-S ✓ Verified by PartsTable
CISCO · MEMORY · RDIMM
WHAT YOU NEED TO KNOW
Memory is a hot market right now. DDR5 and DDR4 are extremely volatile with data centers driving availability to extreme lows. Always validate machine type and model. Remember: all RAM is Hynix, Samsung, or Micron underneath OEM labels — use that to find alternatives. Key checks: Check OEM alternatives — all RAM is Hynix/Samsung/Micron underneath. Double-check what you're quoting in volatile market.
HOT market — DDR5/DDR4 extremely volatile
PRODUCT OVERVIEW

Cisco Catalyst Blade Switch 3120G. Key specifications include Ports: 48 x 10/100/1000 + 4 x SFP, Power: Fanless design, Form Factor: 1RU, Forwarding Rate: 77.4 Mpps, Switching Capacity: 104 Gbps. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MEMORY→ RDIMM→ WS-CBS3120G-S
SPECIFICATIONS
Ports48 x 10/100/1000 + 4 x SFP
PowerFanless design
Form Factor1RU
Forwarding Rate77.4 Mpps
Switching Capacity104 Gbps
COMPONENT DIAGRAM
ECC — 2Rx4 PC4 — RDIMM CISCO NOTCH ~133.35 mm DDR4 RDIMM | — | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN WS-CBS3120G-S MFR CISCO — —
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
451438-B21Compatible
HP BL-c Switch Cisco Catalyst 3120G 1GbE RJ-45 4-Port Uplinks/1GbE 16-Port Downlinks/64Gb Stacking 2-Port Module
compatible
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
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 2
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
451438-B21SUBSTITUTE
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 WS-CBS3120G-S?
WS-CBS3120G-S is a Cisco Catalyst Blade Switch 3120G manufactured by CISCO. It is classified as a MEMORY (RDIMM).
What parts can replace WS-CBS3120G-S?
There are 2 known substitutes for WS-CBS3120G-S: 451438-B21, 451356-001. Substitute compatibility should be verified for your specific system.
Is WS-CBS3120G-S still available?
WS-CBS3120G-S is currently Unknown.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026