blug something into it
CD duplicators used to use Firewire, but these days almost exclusively use USB connections.
Most routers do not use USB connections at all.
If the computer is connected by a USB cord to a powered USB switch, then many connections can be made.
You can get zoom travel router USB port working by repairing it.
USB Cable
both support hot-swapping devices
They use a USB cord... hope this helps.
Yes, eventually through wear and tear USB card readers can stop working.
If you mean 'other connections' as in 'use it to connect other things to the computer', then no. You can only use the iPod charger to connect iPods to the computer.
Yes, USB extension cables will eventually stop working. They can be replaced at any retail or computer store.
One is for power and the other is for data.
Usually a RJ-45 a network connection, a USB connection for a USB modem, or a phone line for a modem connection.