Is it possible to disable both USB 3.0 and USB 2.0 support, while keeping USB 1.0/1.1 support, on my 2012 Mac Mini, under OS X 10.13 High Sierra? Perhaps by removing certain kernel drivers while leaving others in-place?
I need only USB 1.0/1.1 support to allow a simple USB keyboard + mouse to be connected.
I am concerned about physical hardware-based DMA attacks on my Mac Mini with USB 3.0 ports. (Because USB 3.0 can be used as an avenue for direct access to the Mac's internal PCIe bus.)
(I will be disabling or physically removing all other interfaces on the device, i.e. epoxying the Lightning and Firewire connectors so they are unusable, epoxying the Mac Mini's case shut so it becomes tamper-evident, removing the 802.11 wifi and Bluetooth boards, etc. I just need a dumb USB 1.0/1.1 port for keyboard, and an Ethernet RJ45 port.)