Bluetooth 4.0/2.4G Wireless Connection. Dual mode connection. Bluetooth 4.0 brings quick response, precise movement, stable connection & smoother tracking. Do not occupy any USB ports, no need to worry about no USB port left for the mouse. Desktops or laptops(Windows 7) are recommended to use wireless connection. 【Notice】This mouse is compatible with the mac system that is above Mac OS X 10.10.4, while it didn't support Mac OS High Sierra(No.10.13.3). Multidevice control. With one mouse, you can switch free to control 2 computers, extremely convenient. Just press DPI button for 3s, you can control the one you want. A fantastic idea to control your MacBook Pro by bluetooth connection as well as to control your PC or laptop by wireless connection 5 Adjustable DPI Values. 5 DPI (800/1200/1600/2000/2400) levels to suit both ordinary and gaming needs. The default value is 1200 & you can press DPI button to switch. 6 buttons design (left/right button, scroll wheel, DPI/mode switch button, forward/backward button) can meet most people's needs

The keyboard's full layout with Chiclet style keys allows for efficient, comfortable typing - excellent for everyday usage on virtually any task at hand. The convenient multimedia keys let you easily access functions such as play, pause, rewind, and fast-forward plus volume control. With a compact design that still features a full-sized keyboard and number pad, the Dell Wired Keyboard is ideal for home and office environments.