MacOS X High Sierra 10.13 - Bootable USB Re-Install, Upgrade, Recovery by Lamanico : Amazon.co.uk: Software
How to create a macOS High Sierra 10.13 installer on a USB drive
Apple Releases macOS High Sierra 10.13.5 Beta 5 [Download] - iClarified
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Type c to 2.5G network adapter Ethernet 2500mbps USBc Lan RJ45 External card Converter high-speed Gigabit splitter for Macbook - AliExpress Cellphones & Telecommunications