100G QSFP28 DAC Cable 3M | 100GBASE-CR4 Passive Direct Attach Copper Twinax Cable - Refurbished

100G QSFP28 Passive Direct Attach Copper Twinax Cable — 3 Meter

Save big on reliable 100 Gigabit connectivity with this 100GBASE-CR4 QSFP28 to QSFP28 passive DAC cable. Ideal for short-distance data center, HPC, and AI cluster interconnects — delivering the same performance as optical solutions at a fraction of the cost. Backed by Reef Telecom's industry-leading 10-year warranty.

Specifications

• Data Rate: 100Gb/s (4x 25Gbps channels)
• Form Factor: QSFP28 to QSFP28
• Cable Type: Passive Twinax Copper
• Length: 3 meters (10 ft)
• Standard: 100GBASE-CR4
• Compliance: IEEE 802.3bj, SFF-8665, QSFP28 MSA
• Temperature Range: 0°C to +70°C
• Power: Zero — passive design requires no external power

Key Benefits

• Save 60%+ vs. 100G QSFP28 optical transceiver and fiber solutions
• Low insertion loss and ultra-low crosstalk for reliable signal integrity
• Hot-pluggable for easy installation and serviceability
• Multi-vendor compatible — works with Cisco, Arista, Juniper, Dell, Mellanox/NVIDIA, HP, Ubiquiti, Supermicro, and more
• RoHS compliant and halogen-free

Ideal Applications

This 100G QSFP28 DAC cable is the standard choice for short-range 100 Gigabit links in data centers, AI/ML training clusters, high-performance computing (HPC) environments, leaf-spine switch fabrics, and storage area networks. The 3-meter length handles most intra-rack and adjacent-rack connections without the cost or complexity of fiber optics.

Free shipping on orders over $300. Volume pricing available — contact us for multi-rack deployments.