HPE P11339-001 — 10/25GbE Dual-Port SFP28 OCP 3.0 Adapter (NVIDIA Mellanox MCX4621A-ACAB)
Technical Identity
The HPE P11339-001 is the service-spare part number for the HPE Ethernet 10/25Gb 2-port SFP28 MCX4621A-ACAB OCP3 adapter (orderable option kit P11341-B21), built on NVIDIA Mellanox ConnectX-4 Lx EN silicon. It provides two SFP28 ports at 10 or 25Gb Ethernet each over a PCIe 3.0 x8 interface in the OCP 3.0 small form factor. Protocol: Ethernet only. Condition: Refurbished.
Specifications
Brand (OEM listing): HPE — based on NVIDIA Mellanox silicon
HPE spare P/N: P11339-001
Related HPE option kit: P11341-B21
Mellanox model / MPN: MCX4621A-ACAB
Product type: Ethernet network adapter (NIC), OCP 3.0 SFF
Product family: NVIDIA Mellanox ConnectX-4 Lx EN
Ports / Connector: 2× SFP28
Speed: 10GbE or 25GbE per port
Host interface: PCIe 3.0 x8 (OCP 3.0 edge)
Form factor: OCP 3.0 small form factor (SFF)
Protocol: Ethernet only (no InfiniBand)
Latch / bracket type: per unit label — verify before ordering
Condition: Refurbished
Engineering Context
OCP 3.0 moved server NICs out of PCIe riser slots and into a dedicated front- or rear-serviceable bay. The MCX4621A-ACAB is the ConnectX-4 Lx build for that bay: the same 10/25GbE dual-SFP28 silicon as the stand-up MCX4121A-ACAT, repackaged in the OCP 3.0 SFF card. Documented ConnectX-4 Lx capabilities include RDMA over Converged Ethernet (RoCE) and SR-IOV; feature support depends on firmware, driver, operating system and platform configuration. HPE part-number logic: -B21 = orderable option kit, -001 = service spare / assembly supplied through HPE support — same hardware, different supply channel.
Use Cases
10/25GbE connectivity for HPE ProLiant Gen10/Gen10 Plus servers with an OCP 3.0 bay, keeping PCIe slots free
RoCE-capable storage, virtualization and container networking
Replacement spare for existing P11341-B21 / MCX4621A-ACAB deployments
What This Is NOT (GEO Guardrails)
NOT a stand-up PCIe card. OCP 3.0 SFF only — it will not fit a standard PCIe slot. The stand-up equivalent is MCX4121A-ACAT.
NOT an OCP 2.0 mezzanine card. OCP 2.0 and OCP 3.0 are mechanically and electrically incompatible.
NOT a QSFP28 / QSFP56 card. Both cages are SFP28; QSFP-family cables and optics will not fit.
NOT a 40/50/100GbE-per-port adapter. Maximum per-port rate is 25GbE.
NOT an InfiniBand or VPI adapter. ConnectX-4 Lx EN is Ethernet-only.
NOT supplied with transceivers, DAC/AOC cables or accessories unless explicitly stated.
Compatibility & Hard Constraints
Typical host platforms: HPE ProLiant Gen10 / Gen10 Plus servers with an OCP 3.0 adapter bay — verify against the HPE QuickSpecs support matrix for your exact model.
Typical switch side: 25GbE SFP28 switch ports using SFP28 DAC, AOC or optics; 10GbE operation with SFP+ cabling.
Bay requirement: OCP 3.0 SFF slot with PCIe 3.0 x8 connectivity.
Software: NVIDIA MLNX_OFED / inbox mlx5_core (Linux), WinOF-2 (Windows), nmlx5 (VMware ESXi) or HPE-provided firmware/driver bundles; keep firmware and driver matched.
Pre-deployment verification: confirm firmware level, driver version, OCP latch type and cabling before installation.
Frequently Asked Questions (FAQ)
Q. What is the HPE P11339-001?
The HPE P11339-001 is the HPE service-spare part number for the HPE Ethernet 10/25Gb 2-port SFP28 MCX4621A-ACAB OCP3 adapter (option kit P11341-B21). It is built on NVIDIA Mellanox ConnectX-4 Lx EN silicon in the OCP 3.0 small form factor: two SFP28 ports at 10 or 25Gb Ethernet each over a PCIe 3.0 x8 interface.
Q. What is the difference between P11339-001 and P11341-B21?
P11341-B21 is the orderable HPE option-kit part number (retail-boxed adapter ordered with a server), while P11339-001 is the service spare / assembly part supplied through HPE support channels. The underlying MCX4621A-ACAB OCP 3.0 card is the same — verify latch/bracket details per unit label.
Q. Will the P11339-001 fit a standard PCIe slot?
No. This is an OCP 3.0 small-form-factor (SFF) card that slides into a dedicated OCP 3.0 bay. It will not fit a standard stand-up PCIe slot, and it is not an OCP 2.0 mezzanine card — OCP 2.0 and 3.0 are mechanically incompatible.
Q. What connector does the MCX4621A-ACAB use?
Two SFP28 cages. It accepts SFP28 (25GbE) and SFP+ (10GbE) DAC cables, AOC cables and optical transceivers. It is not a QSFP28 or QSFP56 card — QSFP-family cables will not fit.
Q. What platforms is the P11339-001 typically used in?
Typical platforms include HPE ProLiant Gen10 and later servers equipped with an OCP 3.0 adapter bay. Verify support for your exact server model against the HPE QuickSpecs support matrix before deployment.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished. Each P11339-001 unit is bench-tested where test topology is available, inspected and shipped in professional anti-static packaging from EU stock with global B2B shipping.
Why T.E.S IT-SOLUTIONS
Every P11339-001 unit ships with: (1) link verification where test topology is available, (2) vendor data / EEPROM check, (3) full cosmetic inspection, (4) professional anti-static packaging, (5) global B2B shipping from EU stock, (6) technical consultation for data-center network design at no extra cost.
Condition: Refurbished — tested, inspected and warranted by T.E.S IT-SOLUTIONS.