UtterDisbelief
Moderator
- Joined
- Feb 13, 2012
- Messages
- 9,676
- Motherboard
- Gigabyte B760 Gaming X AX
- CPU
- i5-14600K
- Graphics
- RX 560
- Mac
- Classic Mac
- Mobile Phone
Well done
Yes, the thing to realise for macOS is that a single physical USB port needs two entries in IOReg - one so it can run at USB 2.0 speeds and one for USB 3.0 speeds.
So a single physical USB port will have an HS## entry AND an SS## entry, both with the same number (instead of hashes etc).
Both these count towards the macOS 15-port limit. So a motherboard typically has many more ports than you expect.
Yes, the thing to realise for macOS is that a single physical USB port needs two entries in IOReg - one so it can run at USB 2.0 speeds and one for USB 3.0 speeds.
So a single physical USB port will have an HS## entry AND an SS## entry, both with the same number (instead of hashes etc).
Both these count towards the macOS 15-port limit. So a motherboard typically has many more ports than you expect.