100G QSFP28 Passive DAC Cable — Cost-Effective 100 Gigabit Connectivity

Save up to 80% versus OEM pricing on this 100GBASE-CR4 QSFP28 to QSFP28 passive direct attach copper twinax cable. Ideal for short-range 100G interconnects in data centers, AI clusters, and high-performance computing environments. Backed by Reef Telecom's industry-leading 10-year warranty.

Technical Specifications

• Type: 100GBASE-CR4 QSFP28 to QSFP28 Passive DAC
• Data Rate: 100Gb/s (4x 25Gb/s channels)
• Length: 1 meter (3.3 ft)
• Cable: 30AWG Passive Twinax Copper
• Connector: QSFP28 on both ends
• Power: Zero power consumption (passive design)
• Standards: IEEE 802.3bj, SFF-8665, QSFP28 MSA compliant
• Temperature: 0°C to 70°C commercial operating range

Key Benefits

• No transceivers required — plug-and-play copper connectivity
• Zero power draw reduces cooling costs and rack power budget
• Passive design with no active components means exceptional reliability
• Low insertion loss and ultra-low crosstalk for clean signal integrity
• Hot-pluggable for easy installation and maintenance

Compatibility

Multi-vendor compatible with Cisco (QSFP-100G-CU1M), Arista, Juniper (JNP-100G-DAC-1M), NVIDIA/Mellanox, Aruba (HPE JL271A), Dell, and other switches with QSFP28 ports. Also compatible with QSFP56 ports via backward compatibility. Perfect for top-of-rack to server connections in AI/ML training clusters, HPC environments, and enterprise data centers.

Free shipping on orders over $300. Also available in 2m, 3m, and 5m lengths. Volume discounts available for full rack deployments — contact us for a quote.

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.