400G QSFP-DD Passive Loopback Module for Testing

Power Consumption :

The 400G QSFP-DD passive electrical loopback module is used for high speed testing application for QSFP-DD host ports. It provides an efficient way to verify QSFP-DD ports during R&D test, production testing and field testing.


  • Broadband operation capabilities for data rate up to 400 Gbps
  • Available with and without power consumption
  • Compliant with 25G/lane NRZ and 50G/lane PAM4
  • Excellent EMC/EMI performance
  • RoHs 2.0 compliance

Differential Impedance: 100 +/- 10Ohm
Supply Voltage: 3.3V (Typical)
Operating Temperature: 0°C to 70°C
Storage Temperature: -20°C to 80°C
Durability: 50 cycles
Mating Force: 40N max. (Insetion Force), 30N max. (Extraction Force)
Module Retention: 125N min.

Download 400G QSFP-DD Passive Loopback

Worldwide FREE Shipping on orders over US$179

We offer FREE shipping on orders over US$179 WORLDWIDE by FedEx, DHL or UPS! We ship orders Monday through Friday from our warehouses. Most of the orders will be processed and shipped within 1~2 business days, excluding some custom items. The specific shipping time varies on the destination, shipping service you choose, and customs clearance. If you have a strict delivery time requirement, you may contact the sales representative before your purchase, and we will recommend you an appropriate shipping method. According to shipping methods, delivery time around the world is estimated as follows:

  • FedEx Estimated 3-6 business days
  • DHL Estimated 3-6 business days
  • UPS Estimated 3-6 business days

Extended 30-day, no-questions-asked Return Policy

We have a 30-day, no-questions-asked return policy for all of our products. If you aren’t satisfied, please contact our team within 30 days of receipt for a refund or replacement. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original and unopened packaging. To initiate a return please contact our customer success team who will issue an RMA number and provide return shipping instructions.

How to Track your orders

Once your package leaves our warehouse, we'll send you a shipment notification email. This email includes the carrier name, tracking number, shipping date and items' details. You can click the tracking number to track your package on the carrier's website, like DHL, FedEx or UPS.

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400G QSFP-DD Passive Loopback Module for Testing
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