Cisco QSFP-H40G-CU5M 40G QSFP+ Passive Direct Attach Copper Cable

Save on enterprise-grade 40Gbps connectivity with this refurbished Cisco QSFP-H40G-CU5M direct attach copper (DAC) cable. Ideal for short-distance, high-density data center links, this 5-meter passive twinax cable delivers reliable 40GBASE-CR4 performance between QSFP+ ports — at a fraction of the cost of new.

Key Specifications

• Part Number: QSFP-H40G-CU5M (Cisco Refurbished: QSFP-H40G-CU5M-R)
• Data Rate: 40 Gb/s aggregate (4 x 10 Gb/s lanes)
• Cable Type: Passive Twinax Copper DAC
• Length: 5 meters (16.4 ft)
• Connectors: QSFP+ to QSFP+
• Standards: IEEE 802.3ba 40GBASE-CR4, QSFP+ MSA SFF-8436
• Operating Temperature: 0°C to 70°C
• Hot-Swappable: Yes — plug-and-play with zero downtime

Compatible Cisco Platforms

Works with Cisco Catalyst 3650, 3850, 9200, 9300, 9400, 9500, 9600 and Nexus 2000, 3000, 5000, 6000, 9000 series switches and routers.

Why Buy from Reef Telecom?

• 10-Year Warranty — industry-leading coverage on all refurbished equipment
• Free Shipping on orders over $300
• Tested and certified for full Cisco compatibility
• Cost-effective alternative to new OEM pricing

This passive copper DAC eliminates the need for separate transceivers, reducing power consumption and cost while providing low-latency 40GbE connectivity for intra-rack and adjacent-rack deployments in enterprise data centers.

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.