NVIDIA Mellanox MCP2M00-A003E26N 25GbE SFP28 Passive Direct-Attach Copper Cable, 3m, 26 AWG: This is a 3-meter passive direct-attach copper (DAC) cable for 25Gb/s Ethernet (25GbE) point-to-point links between SFP28 ports. It is a fixed-length integrated assembly with bonded SFP28 connectors on both ends, not a transceiver-and-patch-cable pair. The cable uses 26 AWG twin-axial copper conductors and requires no port power. This unit is brand new.
Engineering Context
The MCP2M00-A003E26N delivers low-latency, zero-power 25GbE connectivity in a fully shielded copper assembly. 26 AWG conductors increase copper cross-section for stronger signal integrity at 3m, where 30 AWG passive runs reach their practical limit. Signal integrity at 25 Gb/s NRZ depends on host SFP28 port FEC settings; both ends must agree on FEC mode. Insertion loss budget for the assembly is fixed at the factory and cannot be re-terminated in the field.
Deployment & Use Cases
Top-of-Rack switch to compute node 25GbE links spanning adjacent rack rows. Leaf-switch to storage shelf SFP28 connections. Aggregation links between in-rack switches separated by short patch panels.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MCP2M00-A003E26N
Form Factor: SFP28 to SFP28 (Point-to-Point)
Data Rate: 25Gb/s NRZ
Protocol: 25GbE Ethernet
Cable Type: Passive Direct-Attach Copper (DAC)
Length: 3m
Conductor Gauge: 26 AWG
Power Draw: 0 W (passive)
Condition: New — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Spectrum series switches (SN2000, SN3000) and ConnectX-4 Lx, ConnectX-5, ConnectX-6 Dx EN adapters configured for 25GbE on SFP28 ports. Backwards compatible with 10GbE SFP+ ports. Not compatible with QSFP28 ports without an SFP28-to-QSFP28 breakout adapter. Not a breakout cable; this is a 1:1 SFP28 link only. Length is fixed at 3m and cannot be field-modified.
Frequently Asked Questions (FAQ)
Q. What is the MCP2M00-A003E26N?
The MCP2M00-A003E26N is a 3m passive copper DAC with SFP28 connectors, 26AWG, rated for 25GbE Ethernet.
Q. Is this a splitter cable?
No. It is a straight 1-to-1 SFP28-to-SFP28 point-to-point assembly.
Q. Will T.E.S IT-SOLUTIONS confirm the configuration of MCP2M00-A003E26N before shipping?
Yes. T.E.S IT-SOLUTIONS (tes-itsolutions.com) inspects each unit and verifies vendor markings before dispatch from EU stock.

Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests every passive DAC for connector seating, conductor continuity, and shielding integrity before shipment. We provide expert consultation on 25GbE Ethernet fabric cabling, global B2B shipping, and 1-3 day handling.