Issue
Are PS/2 devices like old-style mice and keyboard are port mapped I/O devices? Are there any PCI or USB devices which can be functioning as port mapped I/O devices?
Solution
The PS/2 keyboard controller is accessed via I/O ports 60h and 64h.
PCI and PCIe devices can provide either MMIO mapped or I/O mapped address ranges or both.
USB devices can only be accessed via the USB controller, which uses MMIO, not I/O ports.
Answered By - prl Answer Checked By - Pedro (WPSolving Volunteer)