Brand: Cisco · SKU: QSFP-H40G-CU · MPN: QSFP-H40G-CU · Category: Networking
The Cisco 40GBASE-CR4 QSFP-H40G-CU is a high-density, low-power 40 Gigabit Ethernet connectivity solution designed for data centers, high-performance computing networks, and enterprise core applications. This passive Direct Attach Copper (DAC) Twinax cable provides a cost-effective alternative to optical transceivers for short-distance links, typically within a rack or between adjacent racks. It features a QSFP+ to QSFP+ copper direct-attach solution, supporting aggregate data rates up to 40Gbps across four independent channels. The cable is hot-swappable, allowing for seamless upgrades and replacements without disrupting network operations. It is compliant with IEEE 802.3ba, SFF-8436, and QSFP Multi-Source Agreement (MSA) standards.
| Data Rate | 40 Gbps |
|---|---|
| Impedance | 100 Ohm |
| Cable Type | Passive Twinax Copper |
| Wire Gauge | 30 AWG |
| Connector Type | QSFP+ to QSFP+ |
| Power Consumption | 0.1 W (typical) |
| Standard Compliance | IEEE 802.3ba, SFF-8436, MSA |
| Operating Temperature | 0 to 70°C (32 to 158°F) |
| Warranty | 90-Day Limited Hardware Warranty |
| Weight | 0.28 lbs |
| Dimensions | 13.5 x 18.4 x 72.4 mm |
Cisco's QSFP-H40G-CU series provides high-speed 40G connectivity using passive copper cables. Ideal for short-range point-to-point connections, these cables offer low latency and minimal power consumption compared to fiber optic alternatives.
Yes, this Cisco 40GBASE-CR4 QSFP Direct-Attach Copper Cable (QSFP-H40G-CU) is 100% genuine Cisco hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
This Cisco 40GBASE-CR4 QSFP Direct-Attach Copper Cable includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the QSFP-H40G-CU.