A nano wireless receiver is a USB device that allows you to pair devices, such as your wireless mouse and keyboard, with your computer. They are exactly the same as standard USB receivers, only smaller and more convenient. However, there are different types of nano wireless receivers.
Logitech NANO RECEIVER Disassembly and Connection Troubleshooting
Some Bluetooth receivers are nano receivers, but not all nano receivers use Bluetooth technology. Bluetooth receivers use 2.4 GHz radio band and can connect multiple devices together, which is why they are called "unifying devices". Devices connected to each other via Bluetooth form a piconet, so such receivers are sometimes called USB pico receivers.
Some wireless nano receivers that do not support Bluetooth operate on the same frequency. However, these only work with specific devices, such as the keyboard or mouse they come with.
Before nano wireless receivers came along, USB receivers were about the size of a regular USB flash drive. They stuck out of the side of a laptop’s USB port, which was inconvenient. Users had to plug them in and out after each use, increasing the chance of losing or damaging the receiver.
