What Is a Nano Wireless Receiver

Memory stick (USB)
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A nano wireless receiver is a miniaturized dedicated USB wireless receiver which permits you to link one or more devices, including your mouse and keyboard (which must be of compatible design), to the same computer. The technology behind the receiver employs  2.4 GHz band radio communication in a way similar to (but incompatible with) Bluetooth. Because it links"one to many," it is a unifying device.

USB Receivers

Before nano wireless receivers came out, USB receivers were about the size of a common USB flash drive. They stuck out of the side of a laptop's USB port, begging to be broken off. 

Nano Wireless Receivers

Nano wireless receivers, on the other hand, are designed to be left in the laptop's port. They are so small that they can rest nearly flush with the side of the laptop. This, according to the manufacturers, lets you pack your laptop in its case without worrying about the receiver damaging the USB port.

If you're a nervous nelly, however, many computer peripheral manufacturers design their mice and keyboards with placeholders for the receiver.