Plug it. Forget it. Add to it. The tiny Logitech Unifying receiver stays in your notebook, so there's no need to unplug it when you move around. Connects up to six Unifying devices to your computer so you can easily add a compatible mouse or keyboard – without the hassle of multiple USB receivers. Advanced 2.4 GHz wireless technology provides a powerful, reliable connection up to 33 feet (10 meters) away with virtually no delays or dropouts.

Logitech USB Unifying Receiver. Product type: USB receiver, Device type: Mouse / Keyboard, Brand compatibility: Logitech. Width: 0.551" (14 mm), Depth: 0.236" (6 mm), Height: 0.591" (15 mm), Weight: 0.0434 oz (1.23 g). Product color: Black

Product type	USB receiver
Device type	Mouse / Keyboard
Brand compatibility	Logitech
Product color	Black
Connectivity technology	Wireless
Wireless range	393.7" (10 m)
Windows operating systems supported	Windows 10, Windows 7, Windows 8
Mac operating systems supported	Mac OS X 10.10 Yosemite
Width	0.551" (14 mm)
Depth	0.236" (6 mm)
Height	0.591" (15 mm)
Weight	0.0434 oz (1.23 g)
Package width	4.01" (101.9 mm)
Package depth	4.33" (110 mm)
Package height	0.63" (16 mm)
Package weight	0.776 oz (22 g)
Quantity per pack	1 pc(s)
Master (outer) case width	7.91" (201 mm)
Master (outer) case length	9.8" (249 mm)
Master (outer) case height	5.35" (136 mm)
Master (outer) case weight	3 lbs (1.36 kg)