NVIDIA Mellanox MCP2M00-A00A 25GbE SFP28 Passive Copper Cable, 0.5m: This is a 0.5-meter passive direct-attach copper (DAC) cable for 25Gb/s Ethernet (25GbE) point-to-point links between SFP28 ports. The connectors are factory-terminated and the cable carries no optics or active electronics. This is a refurbished unit.
Engineering Context
The MCP2M00-A00A is the shortest length in this DAC family and is intended for back-to-back or stacked-switch links inside a single rack — ToR-to-ToR, MLAG peer links, or storage-controller cross-connects. Passive copper at 0.5m has the lowest possible insertion loss and sub-nanosecond cable delay. The integrated EEPROM identifies length, AWG class, and OEM to the host. Compliant with IEEE 802.3by 25GbE.
Deployment & Use Cases
MLAG / VPC peer links between two Top-of-Rack 25GbE switches. ToR-to-ToR stacking interconnects. Direct connection between adjacent storage controllers. ScaleIO/Ceph mesh links inside a chassis. Lab and bench testing of 25GbE NICs and switches at the lowest practical reach.
Technical Specifications
- OEM: NVIDIA Mellanox
- Part Number: MCP2M00-A00A
- Form Factor: SFP28 to SFP28
- Data Rate: 25GbE (25Gb/s NRZ)
- Cable Type: Passive Copper Direct Attach (DAC)
- Length: 0.5m
- Power: Passive (no external power required)
- Standard: IEEE 802.3by 25GbE
- Protocol: 25GbE Ethernet
- Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Spectrum SN2010, SN2100, SN2410, and SN2700 switches at 25GbE, and with ConnectX-4 Lx, ConnectX-5, and ConnectX-6 Lx EN adapters. Requires SFP28 ports configured for 25GbE. Not a breakout cable; not compatible with QSFP28 ports directly. Length is fixed at 0.5m — too short to bridge between non-adjacent racks. Bend radius must be respected at this short length to avoid stress on the connectors.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests every DAC for continuity, EEPROM identity, and connector condition before shipment. We provide expert consultation on 25GbE Ethernet fabric cabling, global shipping, and comprehensive warranty. Standard handling time is 1–3 business days.