Why am I only getting 4K at 30Hz instead of 4K at 60Hz on my external monitor?
The refresh rate is limited by the weakest link in the chain: your device, hub, cable, and monitor. If you see only 30Hz as an option, check:
Port capability: Some HDMI ports on hubs and monitors support only 4K 30 Hz. If your hub has multiple video ports, try another one (for example, a different HDMI port or a USB-C video port).
Cable: Ensure you are using a certified high-speed HDMI cable or a cable specifically rated for 4K 60 Hz.
Monitor settings: Some monitors require enabling specific input modes (for example, “HDMI 2.0” or “High Speed”) to allow 4K 60 Hz.System settings: Open your display settings on macOS or Windows and manually set the resolution and refresh rate, if available.
If 4K 60Hz is not available after these checks, the hub port or your device may be limited to 4K 30Hz.
Different Video Cables / HDMI Connection
Keep in mind of different types of video cables. We can confirm that our Type-C Adapters are only compatible with the HDMI to HDMI connection with a 1.4 or higher HDMI cable.
DVI, VGA, and other additional video connections require a different adapter and will not work with our Satechi Type-C Hub Adapters.
Please note the different video cables in our Comparison Chart:
HDMI FAQs
Q: My laptop has a Type-C with Thunderbolt, but the HDMI doesn’t work. Will the HDMI work if the Type-C port supports Thunderbolt?
A: Most of our Type-C adapters do not work with PC computers. The HDMI feature may be supported if your laptop supports DisplayPort over USB-C with Alternative Mode.
Q: What can cause a flaky external display when using the HDMI port?
A: Flaky connection can be caused by the connection or the HDMI cable. Also, please try to adjust the <sleep mode> on your computer settings to ‘never’.
On a Mac:
Please go to System Settings > then select Energy Saver. https://support.apple.com/en-us/HT202824
By adjusting the "Computer Sleep" to never, it should resolve the flakiness in your HDMI connection. The Display Sleep shouldn't affect the Hub in any way.
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