Choose VM > Removable Devices to connect and disconnect removable devices that you have configured for a virtual machine — including floppy drives, DVD/CD-ROM drives, USB devices and Ethernet adapters — while the virtual machine is running.

When you choose VM > Removable Devices, a submenu appears. Choose a device from that menu to connect or disconnect it, and to edit device settings. If you choose Edit, a dialog box appears. Make all the changes you want to make, then click OK.