BLUELAN NJAAKK-0002-BL 400G QSFP112 Direct Attach Copper Cable, 2 m, Passive, 26 AWG, Infiniband & Ethernet

Deliver 400 Gbps over a short 2-meter link with this QSFP112 Direct Attach Copper cable. It is built for dense 400GBASE-CR4 ports in data centers and HPC clusters, and it also carries Infiniband traffic. Passive copper construction keeps power draw below 0.5 W, so it adds almost no heat or latency to the connection.

Overview

The BLUELAN NJAAKK-0002-BL is a compatible replacement for the Amphenol NJAAKK-0002. Both ends are QSFP112 connectors, and the cable is hot-pluggable. It uses 26 AWG conductors with 100 Ohm impedance, meeting the QSFP112 MSA and IEEE 802.3ck requirements. Operating range is 0 °C to 70 °C, and it can be stored from -40 °C to 85 °C.

What stands out

• 400 Gbps aggregate bandwidth for 400GBASE-CR4 Ethernet or Infiniband
• Passive design: no signal conditioning, <0.5 W power consumption
• QSFP112 to QSFP112, 2 m length, 26 AWG copper
• Hot-pluggable and compatible with Amphenol NJAAKK-0002

Technical details

• Data rate: 400 Gbps
• Standard: 400GBASE-CR4
• Connector type (both ends): QSFP112
• Cable length: 2 m
• Wire gauge: 26 AWG
• Impedance: 100 Ohm
• Supply voltage: 3.3 V
• Power consumption: <0.5 W
• Operating temperature: 0 °C to 70 °C
• Storage temperature: -40 °C to 85 °C
• Compliance: IEEE 802.3ck, SFF-8636 (QSFP112 MSA)

Our verdict

A short, low-power 400G DAC for rack-level QSFP112 links. It is a straightforward copper alternative to active optical cables when the distance is 2 meters or less.