MCP1600-E003E26 Specs: 100G EDR QSFP28 3 m DAC

Direct answer

MCP1600-E003E26 is a 3 m QSFP28 passive direct-attach copper cable positioned for short-reach InfiniBand 100Gb/s EDR links. It contains four high-speed copper pairs, each specified for up to 25Gb/s, and is intended for connections where an optical conversion stage is unnecessary.

Verified specifications

Suitable and unsuitable uses

• Suitable: short EDR links between compatible switches, adapters or related equipment.
• Requires validation: mixed-vendor devices, different firmware releases or a link mode outside the stated EDR use.
• Usually unsuitable: paths beyond the practical copper reach, structured optical cabling or routes where cable weight and bend constraints dominate.

DAC, AOC or optical modules

A passive DAC is worth evaluating for a short, low-power and cost-sensitive link. AOC may be preferable when a lighter cable or more reach is needed. Separate optical modules and fiber provide more flexible structured cabling but introduce additional component and compatibility checks.

Frequently asked questions

Does a QSFP28 connector guarantee compatibility?

No. Confirm both device models, port mode, target protocol and speed, firmware and the cable ordering code.

Can this cable be assumed to support 100G Ethernet?

The retained evidence identifies InfiniBand EDR. Ethernet use requires an explicit compatibility reference or a controlled test with both target devices.

Evidence boundary: Compatibility and sustained link operation are device-specific. Treat the listed values as a screening reference and verify the final pair of endpoints.

Compare the NVIDIA DAC and AOC range and review the DAC, AOC and optics compatibility guide.