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49Y4273 ✓ Verified by PartsTable
IBM · 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

IBM 49Y4273 Flex System 10GB Scalable Fabric Switch. 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→ 49Y4273
SPECIFICATIONS
Part Number49Y4273
ManufacturerIBM
Capacity10GB
COMPONENT DIAGRAM
ECC 10GB 2Rx4 PC4 — RDIMM IBM NOTCH ~133.35 mm DDR4 RDIMM | 10GB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 49Y4273 MFR IBM 10GB —
KEY FEATURES
•
10GB Capacity
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
49Y4270Compatible
IBM BladeCenter Flex System Fabric EN4093 10GbE 42-Port Int (14 Enabled)/40GbE QSFP+ 2-Port (0 Enabled)/10GbE SFP+ 14-Port (10 Enabled) Switch Module - Option
compatible
49Y4272Compatible
IBM BladeCenter Flex System Fabric EN4093 10GbE 42-Port Int (14 Enabled)/40GbE QSFP+ 2-Port (0 Enabled)/10GbE SFP+ 14-Port (10 Enabled) Switch Module - P/N
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 2
49Y4270SUBSTITUTE
IBM BladeCenter Flex System Fabric EN4093 10GbE 42-Port Int (14 Enabled)/40GbE QSFP+ 2-Port (0 Enabled)/10GbE SFP+ 14-Port (10 Enabled) Switch Module - FRU
IBM
49Y4272SUBSTITUTE
IBM BladeCenter Flex System Fabric EN4093 10GbE 42-Port Int (14 Enabled)/40GbE QSFP+ 2-Port (0 Enabled)/10GbE SFP+ 14-Port (10 Enabled) Switch Module - FRU
IBM
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FREQUENTLY ASKED QUESTIONS
What is 49Y4273?
49Y4273 is a IBM 49Y4273 Flex System 10GB Scalable Fabric Switch manufactured by IBM. It is classified as a MEMORY (RDIMM).
What parts can replace 49Y4273?
There are 2 known substitutes for 49Y4273: 49Y4270, 49Y4272. Substitute compatibility should be verified for your specific system.
Is 49Y4273 still available?
49Y4273 is currently Unknown.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026