Dell 0924JW — ConnectX-4 Lx OCP 50GbE Single QSFP28 PCIe 3.0 x8
Technical Identity
Dell OEM Mellanox ConnectX-4 Lx EN OCP 2.0 mezzanine adapter (Dell PN 0924JW): single-port 50GbE QSFP28, PCIe 3.0 x8 host interface, with host management, no PCIe bracket, RoHS R6. Built on the ConnectX-4 Lx ASIC — Ethernet only (Lx ASIC), no InfiniBand. Hardware offloads include RoCE v2, NVMe-oF target/initiator, SR-IOV, stateless TCP/UDP offloads, and VXLAN/NVGRE/GENEVE tunnel encap/decap. Dell PowerEdge qualified. Condition: Refurbished Grade A from EU stock.
Specifications

Brand: Dell (OEM Mellanox ConnectX-4 Lx)
Dell PN: 0924JW
ASIC: Mellanox ConnectX-4 Lx (Ethernet only)
Ports: 1× 50GbE QSFP28 (also runs 40/25/10GbE)
Host interface: PCIe 3.0 x8 (8 GT/s)
Form factor: OCP 2.0 mezzanine, no PCIe bracket
Management: With host management (NC-SI / MCTP over SMBus)
Compliance: RoHS R6
Protocol: Ethernet only — 50/40/25/10GbE
Offloads: RoCE v2, NVMe-oF, SR-IOV, VXLAN/NVGRE/GENEVE, stateless TCP/UDP
Qualification: Dell PowerEdge OCP-capable platforms
Condition: Refurbished Grade A — EU stock

What This Is NOT

NOT a PCIe add-in card. OCP 2.0 mezzanine form factor with no bracket — requires an OCP-capable slot.
NOT dual-port. Single QSFP28 cage only.
NOT InfiniBand capable. Ethernet only (Lx ASIC) — no IB SDR/DDR/QDR/FDR/EDR/HDR/NDR.
NOT a ConnectX-5/6/7 adapter. ConnectX-4 Lx generation, 50GbE ceiling, PCIe 3.0 only.
NOT supplied with QSFP28 transceivers, DAC/AOC cables, or OCP brackets.

Compatibility & Constraints

Host platform: Dell PowerEdge servers with OCP 2.0 mezzanine slot. OEM firmware may restrict feature set on non-Dell hosts — verify before deploying outside PowerEdge.
Switch pairing: Works with any 50/40/25/10GbE Ethernet switch presenting a QSFP28 port — including NVIDIA Spectrum / Spectrum-2, Dell PowerSwitch, Arista, Cisco Nexus, and other standards-compliant top-of-rack switches.
Optics & cabling: Pair with QSFP28 50GbE DAC/AOC or QSFP28-SR4/LR4 transceivers. For 25GbE breakout use a QSFP28→4×SFP28 splitter cable.
OS support: Linux (RHEL/SLES/Ubuntu) with MLNX_OFED or inbox mlx5_core, Windows Server with WinOF-2, VMware ESXi nmlx5 driver. Verify firmware/driver pairing before production.
RoCE v2: Requires lossless or near-lossless Ethernet fabric (PFC + ECN) for predictable RDMA performance.

Frequently Asked Questions (FAQ)
Q. What is the Dell 0924JW?
The Dell 0924JW is a Dell OEM Mellanox ConnectX-4 Lx OCP 2.0 mezzanine adapter — single-port 50GbE QSFP28, PCIe 3.0 x8, host management, no bracket, RoHS R6. Dell PowerEdge qualified.
Q. Is 0924JW a PCIe add-in card?
No — it is an OCP 2.0 mezzanine with no PCIe bracket. It requires a dedicated OCP-capable slot in the host server, not a standard PCIe slot.
Q. Is 0924JW InfiniBand capable?
No — Ethernet only. The ConnectX-4 Lx ASIC does not support InfiniBand; only 50/40/25/10GbE Ethernet.
Q. Can 0924JW be used in non-Dell servers?
Possibly — physical OCP 2.0 compatibility exists, but Dell OEM firmware may restrict features or refuse to initialize outside qualified Dell PowerEdge platforms. Verify before deploying.
Q. What condition does T.E.S IT-SOLUTIONS supply?
Refurbished Grade A — EEPROM-verified, link-tested on Mellanox bench topology, cosmetically inspected, and shipped from EU stock with anti-static packaging.
Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based data-center networking specialist. Every unit is MPN-identified, EEPROM-verified, and cosmetically inspected before leaving our EU warehouse. Multi-currency invoicing, worldwide express shipping, and free pre-sale technical consultation included.