USB 3.1 Type C USB C to DC 5.5 2.1mm Power Jack Extension Charge Adapter Connector Adaptor for New Macbook|usb-c type|usb 3.1usb 3.1 type - AliExpress
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USB Type-C - Wikipedia
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What about USB-C 2.1 for future XMG Gaming Notebooks? : r/XMG_gg