This article provides information about supported ESX/ESXi USB passthrough devices.
The devices not in the following list are available for passthrough including USB storage devices, USB dongle devices etc.
For details on configuring USB devices for passthrough from an ESX/ESXi host to a virtual machine, see USB Configuration from an ESXi Host to a Virtual Machine section of the vSphere Virtual Machine Administration Guide.
There is a chapter about USB passthrough at: USB Configuration from an ESXi Host to a Virtual Machine