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Technical Data Sheet
PartsTable / NETWORK / 40591-SCD
40591-SCD ✓ Verified by PartsTable
— · NETWORK · FC_HBA
WHAT YOU NEED TO KNOW
RJ45 = copper (needs CAT6) | SFP+ = fiber (needs transceiver) FLR = FlexibleLOM (HPE integrated) — NOT standard PCIe
Bracket height MUST match chassis — Full Height (2U) vs Low Profile (1U)
PRODUCT OVERVIEW

IBM LTO4 Ultrium 4 HH 8Gbps Fibre Channel L4 Tape Drive. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4140-01-227-6918, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
NETWORK→ FC_HBA→ 40591-SCD
NSN: 4140-01-227-6918
FSC: 4140
CAGE: 14844 — FREQUENCY ELECTRONICS INC (USA)
SPECIFICATIONS
Part Number40591-SCD
Capacity8GB
NSN4140-01-227-6918
COMPONENT DIAGRAM
NIC CTRL PHY 0 PHY 1 ROM VRM SFP+ SFP+ LINK ACT PCIe x8 ~167 mm NETWORK ADAPTER | 2-PORT 10GbE | SFP+ | Full Height PCIe x8 | Link/Activity LEDs | PXE boot ROM TITLE NIC ADAPTER PN 40591-SCD MFR OEM IBM LTO4 Ultrium 4 HH 8Gbps Fibre Channe
KEY FEATURES
•
8GB Capacity
TYPICAL APPLICATIONS
  • Data center top-of-rack switching
  • High-speed server interconnects (10G/25G/40G/100G)
  • Storage network fabric (iSCSI, FCoE)
  • Campus and branch network infrastructure
  • Firewall and security appliance connectivity
  • WAN edge and SD-WAN deployments
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
A-405-91Interchangeable
interchangeable cross-reference
interchangeable
C823021Interchangeable
interchangeable cross-reference
interchangeable
Y492020101Interchangeable
interchangeable cross-reference
interchangeable
D52506-SCDInterchangeable
interchangeable cross-reference
interchangeable
MM036-48D-3BInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40591-SCD?
40591-SCD is a IBM LTO4 Ultrium 4 HH 8Gbps Fibre Channel L4 Tape Drive. It is classified as a NETWORK (FC_HBA).
What parts can replace 40591-SCD?
There are 5 known substitutes for 40591-SCD: A-405-91, C823021, Y492020101 and 2 more. Substitute compatibility should be verified for your specific system.
Is 40591-SCD still available?
40591-SCD is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026