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Cable Matters 201028 USB-C to 4K HDMI Adapter with Power Delivery
Symptom: The Adapter is not functioning properly on a Windows computer with Thunderbolt 3. Symptoms include no video and flickering video.
Solution: Update BIOS, Thunderbolt 3 firmware, Thunderbolt 3 driver, and Intel Graphics Driver from the manufacturer website. For more details, refer to articles below:
Symptom: The Adapter does not fast charge smartphones such as Samsung Galaxy S8
This adapter will fast charge smartphones such as the Google Pixel which is equipped with USB Power Delivery.
Symptom: The Adapter is not recognized / Adapter does not charge the smartphone / computer
Unplug all cables, restart the computer, and then reconnect everything.
Symptom: Computer is not charging or charges at a reduced speed
This Adapter can pass up to 60 watts of power to the computer. Some computers require more than 60 watts and power delivery may be disabled through USB-C or charge at a reduced speed when 60 watts of power is provided.
Use the original AC power adapter and USB-C cable that came with your computer when charging with this adapter. Third party chargers may not be fully compliant with the USB specification. They may not charge properly or could potentially damage the adapter or your computer.
DO NOT unplug the power to the adapter while in use. This will interrupt the signal and may cause connection issues.
Symptom: HDMI does not work at full 4K 60Hz resolution
The adapter supports HDMI 2.0 resolution up to 4K at 60Hz. You will need a 4K 60Hz rated computer, HDMI cable, and display to take advantage of HDMI 2.0 bandwidth.
Some smartphones and laptops such as the LG G5 (1080p) and 12" MacBook (4K@30hz) do not support 4K at 60 Hz video out. Some displays have multiple HDMI inputs and not all of them are HDMI 2.0 capable so test each HDMI input.
Symptom: No video display on Google Pixel smartphone phones
We noticed that some USB-C devices including Google Pixel may have issues recognizing the reversible connection and may only work with one side plugged in. Please try flipping the USB-C connector over and plugging it in.