USB device stops working during ESXi 5.5 installation

If your USB devices (eg. USB key, USB keyboard -> “no keyboard detected”,…) stop working during the installation of ESXi 5.5 you can try to change the following UEFI BIOS setting:

  • enable EHCI Hand-off in your BIOS USB settings

What is EHCI?

The Extensible Host Controller Interface (EHCI) enables a host controller for USB hardware to communicate with a host controller driver in the software.

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