Direct Attach Cable BlueOptics QSFP56 200GBASE-CR4 Ethernet 30AWG 0.5m

BlueOptics QSFP56 200GBASE-CR4 Direct Attach Copper (DAC) cable, blue jacket, 0.5 m length, provides a short-reach electrical connection for 200 Gbit/s links using a CR4 interface. The cable uses 30AWG conductors and QSFP56 form-factor terminated plugs to connect high-speed ports on servers, top-of-rack switches, or aggregation switches. It is intended for environments where low latency, high throughput and a compact, passive connection are required for short interconnects inside racks or between adjacent racks in data centers.

Advantages

The cable delivers 200 Gbit/s aggregate bandwidth over a single QSFP56 CR4 connection with low latency and minimal protocol overhead. Its passive copper design reduces power consumption compared with active electrical or optical modules and eliminates the need for separate transceivers, simplifying inventory and lowering total cost of ownership. The 0.5 m length and flexible 30AWG construction allow tidy cable routing in dense rack environments while maintaining stable signal integrity for short-distance links.

Suitable for

• Short-reach server-to-switch connections inside a rack
• Switch-to-switch aggregation links in top-of-rack deployments
• High-density data center interconnects requiring 200G throughput

Key specifications

• Data rate: 200 Gbit/s over CR4 electrical interface
• Connector type: QSFP56 to QSFP56
• Conductor gauge: 30 AWG
• Length: 0.5 meters
• Cable type: Direct attach copper (passive DAC)
• Jacket color: Blue

How to use

Insert each QSFP56 connector into the corresponding QSFP56 port on the devices to be linked; ensure the latch engages to secure the connection. Use the cable for direct electrical 200G links between compatible QSFP56 ports configured for CR4 operation. Confirm port settings and link status in the device management interface after insertion. For removal, press the connector latch and pull the plug straight out to avoid damaging the port or cable.

Usage recommendations

Install the cable in clean rack environments and avoid sharp bends; respect the manufacturer's minimum bend radius to preserve signal integrity. Use passive DACs for short spans up to the specified length and verify compatibility with switch or server QSFP56 ports before deployment.