It took me a while to realise that this was referring to a plug-in you need to view the site, and not their advice to you before entering the restaurant.
A USB (Universal Serial Bus) is a type of plug-in connection which connects electronic devices to computers.
The lawnbeater is one of those plug-in kinds, so I get the grass down in largeish arcs around the electrical outlets - I have a lot of extension cords.
to install a plug-in
The keyboard consists of a base, plus various keyboard plug-in modules that can be tailored to specific functions.
Other handsets will presumably be supported through plug-in modems.
Unlike a full-electric vehicle, the hybrid's battery is self-contained and recharges while tapping the brakes, thus requiring no plug-in .
Remove plug-in appliances from the bathroom to avoid the risk of electric shock, and set the temperature on the water heater no higher than 120 F to prevent burns.
Then, within your company or industry group, you can buy the operating system and the plug-in tools that you need, and adapt them to your works.
It is a plug-in burglar alarm that connects instantly to any electrical socket outlet.