100G DAC Cable Extreme Networks 100G-DACP-QSFP1M 1m QSFP28 Black

The Extreme Networks 100G-DACP-QSFP1M is a 1-meter direct attach copper (DAC) cable with QSFP28 connectors, designed for reliable 100 Gigabit Ethernet connectivity in data centers and network equipment racks. The cable supports short-reach, high-bandwidth links between switches, routers, servers and network interface cards, offering a cost-effective alternative to active optical modules for connections within the same rack or across adjacent racks.

Advantages

This 1m QSFP28 DAC cable provides low-latency, high-throughput connectivity with minimal power consumption compared to active optical solutions. Built for compatibility with 100G Ethernet ports, it eliminates the need for separate transceivers and reduces port power draw. The passive copper construction ensures predictable signal integrity for short distances, while the standardized QSFP28 form factor enables straightforward installation and hot-plug operation in compatible networking equipment.

Suitable for

• Short-reach 100G connections between switches within the same rack
• High-performance computing cluster interconnects
• Server-to-switch and switch-to-switch links in data center topologies
• Temporary or fixed high-bandwidth links during maintenance or upgrades

Key specifications

• Connector type: QSFP28 on both ends
• Cable length: 1 meter
• Data rate: Supports 100 Gigabit Ethernet
• Cable medium: Direct attach copper (passive DAC)
• Use environment: Designed for short-range data center interconnects
• Compatibility: Designed for QSFP28-capable ports and equipment supporting 100G links

How to use

Insert each QSFP28 connector into the corresponding 100G port on your network devices until the connector latches. Ensure that the devices are powered down or that hot-swap procedures recommended by the equipment manufacturer are followed if inserting while powered. Verify link status via device LEDs or management interfaces and confirm that the operating systems or switch firmware recognize the 100G link and negotiate appropriate settings. For troubleshooting, reseat connectors and inspect connectors for debris or damage.

Recommendations

Use this 1m DAC cable for short-distance interconnects within racks or between adjacent racks where a passive copper solution is appropriate; avoid using it for longer runs where active optical cables or transceivers are required. Keep the cable routed to minimize sharp bends and secure it to prevent stress at the connector ends. Follow the equipment manufacturer’s guidelines for supported DAC compatibility and firmware versions to ensure reliable operation.