CaseySJ
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@khaoskosmos @DJEarthworm,
Good questions about the USB splitters:
Good questions about the USB splitters:
- The 2-port splitter uses only 1 of the two USB ports from F_USB (either HS11 or HS12, but not both). This is why we see only 4 wires. It adds a USB hub to that port.
- The 4-port splitter is more useful, and that’s the one we should use if we’re going to connect both internal and external devices. This version uses 8 wires and connects a USB hub to HS11 and another hub to HS12. We must connect all internal devices to ONE of these ports, and all external devices to the other. If internal devices are connected to HS11, for example, then we must set its type to 255 and set HS12 to type 0. This is done in the USB SSDT by modifying the value for “Type”.
- In both cases, the total number of USB ports “seen by macOS” remains unchanged because USB hubs count as 1 port. Therefore macOS only sees HS11 and HS12 even though each of them can be split into multiple physical ports.