The loopback module is a 400Gbps Quad Small Form Factor Pluggable QSFP-DD loopback module for testing QSFP-DD transceiver ports on host/system boards. By substituting a full-featured QSFP-DD transceiver, the electrical loopback provides a cost effective method for QSFP-DD port testing.
Power Consumption can only be configured by FS before shipment. If you need to configure power consumption, please contact sales or note the specific power consumption when placing an order
Click to open expanded view






P/N:QDD-LOOP-400G
SKU:115913
US$81.00
Product Highlights
Power Consumption Configurable between 0 to 24W
Transparent 0dB Operation Approximates a Real Cable Connection
8x 53.125Gbps PAM4 400GUAI-8 Electrical Interface
Perfect for Testing 400GBASE Ethernet and HDR InfiniBand Hardware
Hot Pluggable QSFPDD MSA Compliant
Global Services Localized for You
- 7 Local Warehouses Enabling 90% Same-Day Shipping
- 8 Local Presences Supporting 450K+ Enterprise Clients in Over 200 Countries
- Expert Customer Service On Call, 5x24 Phone Support
- Local Engineers Provide Professional FS Install™ Services
FS Install™
End-to-End Product Customization
- 600+ R&D Experts in Software and Hardware Domains
- Hardware Adaptation to Tailor Products and Ensure Seamless Compatibility
- Custom Protocol Development Aligned with Unique Business Needs
- Management Platform Integration for Device Onboarding and Feature Development
FS Product Custom
Always-On Tech Support
- 900+ Technical Support and Service Professionals
- 0.5-Day Average Solution Response Time
- On-Site, Remote, Demo, and Online Support Options
- Personalized Technical Services Tailored to Each Project
- Simplify Network Design with FS Design Center Tool
Tech Support
400G QSFP-DD Passive Loopback Testing Module
Quality Testing Program
Quality Testing Program
Optical Transceivers Testing Learn more
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Please Note: Installing a third party transceiver does not void your network equipment warranty. Network equipment manufacturers all have guidelines stating that warranty support on their products will not be affected.
Recently Viewed