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Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.
StarTech QSFPH40GCU3M 40Gbps Direct Attach Cable
Overview
The StarTech QSFPH40GCU3M is a 3-meter (9.8 ft) passive direct attach copper cable designed for high-speed 40 Gigabit Ethernet connections. It provides a cost-effective, low-power solution for short-reach interconnects between network devices like switches, servers, and storage systems within a rack or between adjacent racks. This cable is ideal for data centers and enterprise environments requiring robust 40Gbps connectivity without the complexity or cost of active optical modules.
Compatibility
This cable is engineered to be 100% Cisco QSFP-H40G-CU3M compatible, ensuring seamless integration with Cisco switches and other networking equipment that utilize QSFP+ ports. It supports 40 Gbps network speeds and maintains a 100 Ohm impedance, critical for signal integrity in high-speed data transmission. It is suitable for any deployment requiring a direct connection between two QSFP+ ports.
Installation Notes
The cable operates within a temperature range of 0°C to 70°C (32°F to 158°F), making it suitable for standard data center environments. Power consumption is minimal, less than 0.1W per end, drawing 3.3V DC. The PVC jacket material offers flexibility and durability for typical rack installations. Product dimensions are 9.8 ft (3.0 m) in length, 0.7 in (1.8 cm) in width, and 0.5 in (1.3 cm) in height, with a product weight of 9.2 oz (261.0 g).
What's in the Box
- 1 - 3m 40Gbps QSFP+ Direct Attach Cable
StarTech 100% Cisco QSFP-H40G-CU3M Compatible 3M - QSFPH40GCU3M
Build Your Complete System
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
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System Design, Deployment & Technical Support
Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.
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- Access fixed-scope support for rollout planning
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Guides, Tools & Calculators
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