Q: How can I extend the hassle-free warranty?

A: Register your hassle-free warranty easily with your email.

Q: How can I get a replacement or refund?

A: You can fill out the customer support form here or email us at

Q: hat should I do if the product does not work?

A: For the USB C to HDMI Adapter/Cable, please ensure your laptop/smartphone is in DP Alt Mode First. Only the DP Alt Mode USB-C port can be used to output video. Please complete the customer support form for other products to get our consultancy or replacement in 24 hours.

Q: I haven't received my order yet; what should I do?

A: All the Syntech products are delivered, wrapped, and shipped by FBA(Fulfillment by Amazon) service. We encourage you to contact Amazon support through Amazon's front page. Amazon customers are very friendly and would happily solve your issue.

Q: The product was damaged after use; what should I do?

A: All of our products have an extended lifetime warranty. If you use a Mac laptop, please reset the System Management Controller (SMC) first. For a refund or replacement, please fill out our contact form to get our customer support within 24 hours.