Copper DAC Cable CBO QSFP28-DAC-2M 2 m Passive QSFP28 Direct Attach

The Copper DAC Cable CBO QSFP28-DAC-2M is a 2-metre passive direct attach cable designed for QSFP28 ports and compatible 100GbE hardware. As a copper passive solution, it provides a short-reach interconnect that links switches, routers and servers without the need for separate transceivers. The cable offers a straightforward, low-power option for high-density networking environments and is suited to data centre top-of-rack and adjacent-rack connections where distances up to two metres are required.

Advantages

This passive QSFP28 direct attach cable reduces overall system cost by eliminating the need for active optical modules and separate transceivers. Its copper construction lowers power consumption compared with active optical solutions and simplifies installation with an integrated QSFP28 connector on each end. The fixed 2 m length helps maintain cable management and supports high-density port deployments while delivering the bandwidth and signal integrity expected for 100GbE links.

Suitable for

• Short-range 100 Gigabit Ethernet connections between switches, routers and servers
• Top-of-rack and adjacent-rack interconnects in data centres
• High-density networking racks where low latency and low power are priorities

Key specifications

• Connector type: QSFP28 on both ends for direct attach use
• Cable type: Passive copper direct attach cable
• Length: 2 metres
• Supported data rate: 100GbE (QSFP28 standard)
• Typical use: Short-reach interconnects within racks or between adjacent racks
• Power profile: Passive (no active components, lower power consumption than active optical solutions)

How to use

Insert each QSFP28 connector into the corresponding QSFP28 port on your networking devices until the connector latches. Ensure both devices are configured for 100GbE operation and check link status through the devices' management interfaces. Route the cable to avoid sharp bends and maintain recommended bend radius for high-speed copper assemblies. For removal, release the connector latch and withdraw straight out to avoid damaging ports.

Recommendations

Use this passive DAC for short, direct connections up to 2 metres inside racks or between adjacent racks. Verify device compatibility with QSFP28 passive copper direct attach cables in vendor documentation before deployment, and maintain proper cable routing and strain relief to preserve signal integrity and port longevity.