HP ALOM single-port 10GbE SFP+ adapter kit — the HP 682148-B21 is an HP-branded ConnectX-3 (CX3) based 10GbE single-port SFP+ adapter in HP ALOM (Adapter Local Only Module) form factor, supplied as an adapter kit. MPN: 682148-B21. This product IS an HP ALOM form factor NIC for HP ProLiant servers with ALOM slots; it is NOT a standard PCIe add-in card and is NOT compatible with standard PCIe x4/x8/x16 slots. Condition: refurbished.
Engineering Context
The 682148-B21 uses the NVIDIA Mellanox ConnectX-3 ASIC and presents as a 10GbE single-port SFP+ NIC to the host. HP ALOM (Adapter Local Only Module) is an HP-proprietary server mezzanine interface used in HP ProLiant rack and tower servers, functionally similar to OCP mezzanine but using HP’s own mechanical connector and slot specification. The ALOM interface routes PCIe lanes from the server motherboard to the card without requiring a discrete PCIe slot or riser, allowing the NIC to occupy a dedicated server-integrated bay. ConnectX-3 at 10GbE supports hardware TCP/IP offloads including large send offload (LSO), receive-side scaling (RSS), and VXLAN hardware offload. RDMA via iWARP is supported in certain OS/driver configurations.
Deployment & Use Cases
Deployed in HP ProLiant rack and tower servers with ALOM slots requiring an integrated 10GbE SFP+ NIC without consuming a PCIe expansion slot. Used in VMware ESXi environments on HP ProLiant platforms where the ALOM slot provides the primary 10GbE uplink. Suitable for HP ProLiant DL, ML, and SL server generations that support the ALOM interface specification. Appropriate for data center environments leveraging HP’s FlexibleLOM or similar slot architecture for integrated networking. The “Adapter Kit” designation indicates the product is supplied with associated mounting hardware and/or brackets for the supported HP ProLiant platforms.
Technical Specifications
MPN: 682148-B21
OEM: HP (HPE)
ASIC: NVIDIA Mellanox ConnectX-3
Form Factor: HP ALOM (NOT standard PCIe)
Protocol: Ethernet only
Ports: 1 × SFP+
Speed: 10GbE
TCP/IP Offload: Hardware-accelerated (LSO, RSS, VXLAN)
RDMA: iWARP (driver-dependent)
Condition: Refurbished
Compatibility & Constraints
Compatible ONLY with HP ProLiant servers that provide an ALOM (Adapter Local Only Module) slot — the HP-proprietary mezzanine interface. The 682148-B21 is NOT compatible with standard PCIe x4/x8/x16 slots and cannot be used as a standalone PCIe add-in card. NOT compatible with non-HP ALOM implementations. SFP+ port requires a compatible 10GbE SFP+ optical transceiver or SFP+ DAC cable. The adapter does NOT support InfiniBand. Predecessor: earlier HP ALOM NICs with 1GbE or different ASIC; successor: HP ALOM adapters based on ConnectX-4 Lx or later. Verify ALOM slot compatibility with the specific HP ProLiant server model and generation before ordering.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests all HP ALOM adapters for ALOM slot link-up, PCIe enumeration, and 10GbE SFP+ port functionality prior to dispatch. Lab-verified stock, 1–3 business day handling, global shipping. Technical consultation available for HP ProLiant ALOM compatibility. Visit tes-itsolutions.com.