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331FLR — Memory Specs & Substitutes

✓ Verified by PartsTable
HP · 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: Double-check what you're quoting in volatile market.
HOT market — DDR5/DDR4 extremely volatile
PRODUCT OVERVIEW

The HP 1GbE 4-port 331FLR Adapter is a HP industrial component. Key specifications include Speed: 1GbE, Interface: PCIe, Form Factor: FlexLOM. 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→ 331FLR
SPECIFICATIONS
Ports2
Speed1GbE
InterfacePCIe
Form FactorFlexLOM
COMPONENT DIAGRAM
ECC 1GB 2Rx4 PC4 — RDIMM HP NOTCH ~133.35 mm DDR4 RDIMM | 1GB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 331FLR MFR HP 1GB —
KEY FEATURES
•
1GbE Interface
•
1GB Capacity
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
684208B21SubstituteBROKER-VERIFIED
HP 1GbE 4-port 331FLR Adapter
substitute
629135B21SubstituteBROKER-VERIFIED
HP 1GbE 4-port 331FLR Adapter
substitute
629133001SubstituteBROKER-VERIFIED
HP 1GbE 4-port 331FLR Adapter
substitute
634025001SubstituteBROKER-VERIFIED
HP 1GbE 4-port 331FLR Adapter
substitute
AP769ASubstituteBROKER-VERIFIED
HP 1GbE 4-port 331FLR Adapter
substitute
789897001SubstituteBROKER-VERIFIED
HP Ethernet 1GB 4p 331FLR Adptr
substitute
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 331FLR?
331FLR is a HP 1GbE 4-port 331FLR Adapter manufactured by HP. It is classified as a MEMORY (RDIMM).
What parts can replace 331FLR?
There are 6 known substitutes for 331FLR: 684208B21, 629135B21, 629133001 and 3 more. Substitute compatibility should be verified for your specific system.
Is 331FLR still available?
331FLR 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: October 2026