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Fixing M1 Mac External Display Issues (Flickering Screen, White Noise, Black Screen, etc) | OSXDaily
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Apple's new 2021 MacBook Pro only comes with an HDMI 2.0 port which cannot output 4K at 120Hz on an external display - NotebookCheck.net News
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If your external display isn't detected or appears blurry when connected to your Mac - Apple Support
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Amazon.com: MNN Portable Monitor 15.6inch FHD 1080P Laptop Monitor USB C HDMI Gaming Ultra-Slim IPS Display w/Smart Cover & Speakers,HDR Plug&Play, External Monitor for Laptop PC Phone Mac Xbox PS5/PS4 Switch :
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