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PartsTable / MEMORY / CPAK-100G-ER4L
CPAK-100G-ER4L ✓ 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 original refurbished CPAK-100G-ER4L Module with LC connector (25km). Key specifications include DataRate: 100Gbps, Connector: LC duplex, FiberType: Single-mode, FormFactor: CPAK, Wavelength: 1310nm, MaxDistance: 40km. This product has reached end-of-marketing and is available through the secondary market and authorized resellers.

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→ CPAK-100G-ER4L
SPECIFICATIONS
DataRate100Gbps
ConnectorLC duplex
FiberTypeSingle-mode
FormFactorCPAK
Wavelength1310nm
MaxDistance40km
PowerConsumption< 6W
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 CPAK-100G-ER4L MFR CISCO — —
VERIFIED SUBSTITUTES & CROSS-REFERENCES

No verified substitutes available.

LIFECYCLE
StatusEOS
End of Sale2022-06-08
End of Support2022-03-10
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CPAK-100G-ER4L?
CPAK-100G-ER4L is a Cisco original refurbished CPAK-100G-ER4L Module with LC connector (25km) manufactured by CISCO. It is classified as a MEMORY (RDIMM).
Is CPAK-100G-ER4L still available?
CPAK-100G-ER4L is currently eos. End of Support: 2022-03-10.
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Last verified: July 2026