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656590-B21 ✓ Verified by PartsTable
HPE · NIC ADAPTER
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

The HP 656590-B21 HP 10GB 2P 530FLB Adapter Manufacturer: HP ItemCondition: REF Model: Alternative Part Numbers: 530FLB,656590-B21,657132-001 is a HPE industrial component. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
656590-B21
SPECIFICATIONS
Part Number656590-B21
ManufacturerHPE
Capacity10GB
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 656590-B21 MFR HPE HP 656590-B21 HP 10GB 2P 530FLB Adapter
KEY FEATURES
•
10GB Capacity
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
657132-001Compatible
HP NIC 530FLB 10GbE 2-Port PCI-E-2.0x8 Flex-10 Ethernet BL-c FlexibleLOM (Broadcom BCM57810S)
compatible
656588-001Compatible
HP NIC 530FLB 10GbE 2-Port PCI-E-2.0x8 Flex-10 Ethernet BL-c FlexibleLOM (Broadcom BCM57810S)
compatible
684211-B21Compatible
HP NIC 530FLB 10GbE 2-Port PCI-E-2.0x8 Flex-10 Ethernet BL-c FlexibleLOM (Broadcom BCM57810S) FIO
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 3
656588-001SUBSTITUTE
HP NIC 530FLB 10GbE 2-Port PCI-E-2.0x8 Flex-10 Ethernet BL-c FlexibleLOM (Broadcom BCM57810S)
HPE
657132-001SUBSTITUTE
HP NIC 530FLB 10GbE 2-Port PCI-E-2.0x8 Flex-10 Ethernet BL-c FlexibleLOM (Broadcom BCM57810S)
HPE
684211-B21SUBSTITUTE
HP NIC 530FLB 10GbE 2-Port PCI-E-2.0x8 Flex-10 Ethernet BL-c FlexibleLOM (Broadcom BCM57810S)
HPE
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FREQUENTLY ASKED QUESTIONS
What is 656590-B21?
656590-B21 is a HP 656590-B21 HP 10GB 2P 530FLB Adapter Manufacturer: HP ItemCondition: REF Model: Alternative Part Numbers: 530FLB,656590-B21,657132-001 manufactured by HPE.
What parts can replace 656590-B21?
There are 3 known substitutes for 656590-B21: 657132-001, 656588-001, 684211-B21. Substitute compatibility should be verified for your specific system.
Is 656590-B21 still available?
656590-B21 is currently Unknown.
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Last verified: July 2026