Best bet ... the plug has fallen out.
Best bet ... the plug has fallen out.
A number of things can prevent peripheral devices from communicating. Bad cables, missing drivers, and resource conflicts are on the list. Without the drivers for the ports used and the drivers for the devices on the ports, the devices cannot communicate.
The IP address.
USB activation keys are a common solution used to increase the security around the use of USB storage devices such as as memory sticks and external drives. The keys function to prevent the spread of malware from such peripheral devices to the machines that they are plugged into. Thus a USB activation key will be used by software to prevent the spread of malware to a USB stick that is not as yet infected and similarily prevent the spread of malware from an infected USB device to something like a computer.
anti spyware
Computer fans that you can buy at a electronic store and there are fans inside the laptop or desktop itself.
Fans and "Heat Sinks" are both necessary to prevent computers from overheating.
There are a great many devices in the world that are used to prevent noise pollution. Mutes and sound-proofing materials on walls are two devices used.
Contraceptive is designed to prevent pregnancy
Bluetooth uses radio-frequency signals to communicate between devices. It uses these signals because the range that it uses requires a very modest amount of power. To avoid connecting with another Bluetooth device, the signal varies between 2.402 gigahertz and 2.48 gigahertz. The signal changes 1600 times every second and the devices that are communicating change the range in unison to prevent unwanted reception from other devices.
Valves in the peripheral veins prevent blood from backflow during the off beat of the heart. If not for the valves, the flow of blood would tend to pool at the extremities.
Your hearing-your ears.