YENKEE YKM 2009CS Combo WL - EN/SK

Wireless connectivity is an innovative technology that allows devices to communicate without cables with a computer or other devices. They can be powered by a classic battery (AA or AAA type) with long life, or by an integrated battery for practicality, but with less life. Battery life can also be further reduced by the presence of a backlight. The standard range of such a connection is 10 metres, but some devices can communicate over longer distances. This makes them ideal for laptops and for carrying around.

This small device allows wireless peripherals such as keyboards and mice to communicate with the computer. It is usually plugged into the computer's USB port and acts as a bridge between the computer and the wireless device.

Membrane keyboards work on the principle of a flexible membrane that is located under the keys. When the user presses a key, the membrane touches the bottom perimeter, registering the keystroke. This type of keyboard is usually quiet in use, so it is suitable for office environments. Due to their design, membrane keyboards are also more resistant to dust and spills. The membrane underneath the keys provides a degree of protection against the ingress of foreign particles and liquids, which can help prevent damage.

DPI (dots per inch) is an indicator that measures the sensitivity of the mouse. A higher DPI value means the mouse responds to smaller movements, while a lower value means the opposite. Mice with variable DPI allow users to adjust the sensitivity to their specific needs, whether it's for detailed graphics work or playing shooter games.

Mice are usually equipped with clickable buttons that can create noise. A quiet mouse is specifically designed to minimise this clicking noise, making it ideal for quiet workplaces, common areas or homes.

The classic mouse wheel is normally located in the middle between the two main buttons and allows you to scroll vertically through documents or web pages. This is a common and accepted feature on most mice.

The Unifying ready feature on the PC mouse indicates the mouse is compatible with Logitech's Unifying technology. This technology allows you to connect multiple devices, such as a keyboard and mouse, to a single Unifying USB receiver. For users, this means fewer busy USB ports and easier management of wireless devices. If a mouse is designated as "Unifying ready", it can easily be added to an existing Unifying ecosystem without the need for an additional USB receiver.

The Unifying receiver is a compact wireless receiver developed by Logitech. It allows you to connect multiple devices, such as keyboards and mice, to a single receiver, saving USB ports on your computer.