So some rocks are radioactive because they have radioisotopes in their nuclei. Also they may have radon gas trapped in their crystals if they are igneous rock. They could also be radioactive due to the fact that the atom of the rock is unstable.
Connecting USB Devices Manually. Choose VM > Removable Devices to connect specific USB devices to your virtual machine. You can connect up to two USB devices at a time. If the physical USB devices are connected to the host computer through a hub, the virtual machine sees only the USB devices, not the hub.
How to install these drivers depends on how you got them. If you purchased the VAIO Upgrade Tool on USB Media: 1  Plug the VAIO Upgrade Tool USB Flash Drive into a USB 2.0 standard black port on your PC. 2  Some PCs are equipped with a USB 3.0 blue port as well. 3  Do not plug your USB flash drive into a USB 3.0 blue port.