Cablexa QSFP28 Active Electrical Loopback, 100Gbps Transceiver Module

Manufacturer: Cablexa
Part Number: QSFP28-100G-LB
Availability: In Stock
Ships: Usually in 2 days
Price: $550.00

Available Options



The QSFP28 active electrical loopback is used for testing QSFP28 transceiver ports in board level test. By substituting for a full-featured QSFP28 transceiver, the electrical loopback provides a cost effective low loss method for QSFP28 port testing. The GQS-MPO101-LP is packaged in a standard MSA housing compatible with all QSFP28 ports. Transmit data from the host is electrically routed (internal to the loopback module) to the receive data outputs and back to the host. Since the loopback module does not contain laser diodes, photodiodes, laser driver or transimpedance amplifier chips, etc., it provides an economical way to exercise QSFP28 ports during R&D validation, production testing and field testing. The GQS-MPO101-LP provides QSFP28 power Class 1, 2, 3, or 4 loading using a customer supplied +3.3V voltage supply. Power Classes 5, 6 and 7 are available upon request.


  • 4 channels full-duplex transceiver modules            
  • Supports 100Gbps total data rate
  • Low power consumption <1W
  • Hot Pluggable QSFP form factor
  • Built-in digital diagnostic functions:Temperature,Voltage
  • Operating case temperature 0°C to +70°C
  • 3.3V power supply voltage
  • RoHS 6 compliant(lead free)


  • IEEE 802.3bm 100GBASE SR4
  • Infiniband EDR
  • QSFP port/system testing


  • Part Number: QSFP28-100G-LB
  • Product Type: Transceiver Module
  • Form Factor: QSFP28
  • Data Rate (max): 100Gb/s
  • Distance (max): -
  • Transmitter: No
  • Receiver: No
  • Digital Diagnostic: Yes
  • Connector: No
  • Cable Type: No
  • Wavelength: No
  • Operating Temperature: 0 to 70°C (32 to 158°F)


  • Cablexa Logo (Default)
  • Generic Label
  • Custom Label

This QSFP28-100G-LB is marked and labelled with Cablexa brand as default. Customized labelling and branding are available as request.


Cablexa offers 5-year limited warranty on this QSFP28-100G-LB optical transceiver module.

Quality Guarantee

Cablexa offers a large selection of optical transceivers that are compatible with all the major brands. We also carry transceivers in various form factors to meet your networking needs. Now you have a reliable, compatible and affordable means to expand your network while maintaining its integrity. All of Cablexa's transceivers are tested for 100% functionality and guaranteed compatible for outstanding network performance.

This Cablexa QSFP28 Active Electrical Loopback, 100Gbps Transceiver Module is 100% MSA compliant. It is guaranteed compatible with your router or switch. And it comes with a 5-year warranty and lifetime technical support. If you have any questions about this QSFP28-100G-LB transceiver module or any other item, feel free to contact us.

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