400G QSFP-DD Loopback Module


BizLink® QSFP-DD loopback module is desgined to test QSFP-DD ports effectively by looping back electrical signal. This module is a 8-channel transmission which supports data rates of up to 400Gbps. QSFP-DD loopback are backwards plug compatible with existing 100G based systems and support 200G (8 channels @ 25G NRZ) or 400G (8 channels @ 50G PAM 4) signaling transmission.


  • Differential impedance: 100 +/- 10Ohm
  • Supply voltage: 3.3V (Typical)
  • Operating temperature: 0 to 70℃
  • Storage temperature: -20 to 80℃
  • Durability: 50 cycles
  • Mating force: 40N max. (Insetion force), 30N max. (Extraction force)
  • Module retention: 125N min.
In order to fulfill the exponential growth of data transmission and large size media contents, data centers require fast, reliable, and seamless connectivity to keeping data flowing securely. BizLink provides high-speed, high-quality cables, wires, and connectors to support greater bandwidth and faster processing.