Network Cable BlueOptics JG330A-BL QSFP 4 x SFP+ InfiniBand 3 m Black

The BlueOptics JG330A-BL QSFP 4 x SFP+ InfiniBand 3 m Black is a 3-metre direct attach cable (DAC) with a QSFP connector on one end and four SFP+ connectors on the other. Designed for short-reach, high-speed links in rack and adjacent-rack environments, this passive twinax copper assembly supports up to 40G aggregated bandwidth and electrical 40GBase-CR4 / 4x10GBASE-CR signalling over its 3 m length. The cable’s black jacket and compact QSFP-to-4xSFP+ breakout format enable integration into switches, routers and storage systems that accept compatible QSFP/ SFP+ interfaces.

Advantages

This QSFP to 4×SFP+ DAC offers low latency and low power consumption typical of passive twinax copper assemblies, with no active electronics required for supported 10G/40G links. The cable is manufactured to MSA-compliant mechanical and electrical specifications and is tested for interoperability with major hardware platforms that support the original HPE JG330A 40GBase-CR4 style breakout cables. Its 30 AWG twinax construction provides reliable signal integrity across the specified 3 m range, and the compact breakout reduces the need for additional transceivers or media converters.

Suitable for

• Short-reach interconnects between switches, routers or storage in racks and adjacent racks
• 40GBase-CR4 and 4x10GBASE-CR direct attach applications
• InfiniBand and Ethernet links in data centres and server rooms

Key specifications

• Cable length: 3 m
• Connector type: QSFP to 4 × SFP+
• Cable type: Passive twinax copper (30 AWG)
• Supported data rates: up to 40 G aggregated (4 × 10 G lanes)
• Typical power consumption: passive (near 0.1 W per cable environment dependent)
• Product colour: Black
• Weight: 0.25 kg

How to use

For installation, power down or follow hot-plug guidelines of your network equipment according to the vendor’s instructions. Insert the QSFP end into a compatible QSFP port and connect the four SFP+ ends to the corresponding SFP+ ports on the remote device, ensuring correct orientation and full seating of each connector. Verify link status and negotiated speeds in the host devices’ management interface. Use this cable for short electrical connections only; it is not intended for long-distance optical transport.

Recommendations

Use the cable within the specified 3 m distance and in environments where the connected hardware explicitly supports passive QSFP-to-4×SFP+ breakout DACs. Avoid excessive bending near the connector ends, maintain strain relief, and follow equipment vendor compatibility lists to ensure full feature support and stable operation.