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400G QSFP-DD Loopback Transceiver

Optech is proud to announce that the 400G QSFP-DD Loopback is now availabale !

400G QSFP-DD Loopback Transceiver
400G QSFP-DD Loopback Transceiver

The 400G QSFP-DD Loopback Transceiver is a cost effective and high quality solutions to test 400G QSFP-DD transceivers ports.

For more information or to order the 400G QSFP-DD Loopback Transceiver, contact us at

What is a Loopback Transceiver ?

The best solution for testing switches and servers ports is the passive electrical loopback transceiver. The loopback transceiver works by simulating the communication between two devices by transmitting the data (output) and receiving it (input).

More Loopback Products

Optech‘s Loopback Transceivers serie also includes the 10G SFP+ Loopback, 40G QSFP+ Loopback, 25G SFP28 Loopback and 100G QSFP28 Loopback.

More 400G QSFP-DD Products

Optech aslo has different 400G QSFP-DD products such as the

400G QSDP-DD SR8 Optical Transceiver

400G QSFP-DD DR4 Optical Transceiver

400G QSFP-DD LR4 Optical Transceiver

If you want to know more about the difference between the 400G OSFP Transceiver and the 400G QSFP-DD Transceiver click here.

About Optech

Optech Technology Co. Ltd was founded in 2001 in Taipei, Taiwan. The company was created with a sole purpose, to provide a wide and high quality portfolio of optical products to a very demanding and fast evolving market.

To respond to the permanent increase of IP traffic, Optech portfolio is constantly growing. Since the beginning, the company has always been up to date with the latest innovations on the market. Today, we are proud to deliver a large selection of 25G SFP28, 40G QSFP+, 100G QSFP28 and 400G QSFP-DD optical transceivers and cables.

Optech has a large portfolio of products which include optical transceivers, direct attach cables, active optical cables, loopback transceivers, media converters and fiber patch cords.

Through its large selection of optical products, that have a range of data speed from 155 Mbps to 400 Gbps and reach distances up to 120km, Optech products are suitable for various industries such as telecom, data centers as well as public and private networks.

Optech also has a strong experience as an OEM supplier. We put our expertise and knowledge at the service of your brand.

To ensure the quality and the compatibility of our products, every product is carefully tested before delivery to our customers. In addition, Optech obtained several certifications such as UL, TUV Rheinland, ISO9001 and ISO14001 certification. All our optical transceivers are MSA and RoHS compliant.

At Optech, we value each and every customer. We know every demand is unique. For this reason, our team of experts is glad to answer all our customers’ specific demands.

Just like data, Optech has no boundaries and will optimize your network all over the world.

For more information you can visit or contact us at

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