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Amazon.com: USB C Adapter for MacBook Pro MacBook Air 13 15 16 inch 2020/2019/2018, USBC HDMI Dongle with 4K HDMI,1*USB 3.0&1*USB 2.0 Port,Gigabit Ethernet,SD/TF Reader,Thunderbolt 3 and USB C Port : Electronics
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Review: Using LG's UltraFine 4K Display with Apple's USB-C MacBooks is as simple as can be | AppleInsider
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Purgo Mini USB C Hub Adapter Dongle for MacBook Air M1 2021-2018 and MacBook Pro M1 2021-2016, with 4K HDMI, 100W PD, 40Gbps TB3 5K@60Hz, USB-C and 2 USB 3.0 (Gold)
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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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Review: LG's USB-C-enabled 4K Monitor lends single cable simplicity to 12" MacBook owners, but not without some compromises - 9to5Mac
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