Product InfoLogitech Unifying Receiver Carrier and Activation Want to wirelessly connect a Logitech Flow or Easy-Switch mouse to a second computer? Simply add an extra Unifying receiver and plug it into your second computer. Then use a Logitech Flow mouse to seamlessly cut, paste and move files between computers. With Flow technology, the cursor automatically crosses from one screen to the next. Or use an Easy-Switch mouse to switch from one computer to the other with the push of a button. Either way, the tiny Logitech Unifying receiver stays in your computer so your wireless mouse is always connected and ready to use. And it connects up to six Unifying devices to your computer so you can easily add a compatible mouse or keyboard – without sacrificing precious USB ports. Advanced 2.4 GHz wireless technology provides a powerful, reliable connection up to 33 feet (10 meters) away with virtually no delays or dropouts. Unifying compatible Mice List MX Master 2S MX Anywhere 2S MX Master MX Anywhere 2 MX Performance MX Anywhere M720 Triathlon Multi-Device Mouse M705 Marathon Mouse Wireless Mouse M585 Multi-Device Wireless Trackball M570 M545 Wireless Mouse M525 Wireless Mouse M510 Wireless Mouse M325/M325c Wireless Mouse M310 Wireless Mouse M317 Wireless Mouse (M317c is not compatible) M187 Ultra Portable Unifying compatible Keyboards List Illuminated Living-Room Keyboard K830 Wireless Illuminated Keyboard K800 K780 Multi-Device Wireless Keyboard Wireless Solar Keyboard K750 Wireless Solar Keyboard K750 for Mac Wireless Touch Keyboard k400 Plus K400 Professional Wireless Touch Keyboard Wireless Touch Keyboard k400 K375s Multi-Device Wireless Keyboard and Stand Combo K360 Compact and slim wireless keyboard K350 COMFORT WAVE K270 Full-size wireless keyboard System Requirements: Windows 10 or later Windows 8 Windows 7Mac OS 10.10 or laterWhat You Get: Logitech - USB Unifying ReceiverTerms & ServicesShipping: All items that we offer are in stock and ready to ship. All orders will be shipped within 1 business day of purchase. International Buyers - Customs: Every country has different customs rates and laws. Payment of Customs Duties, taxes, & or fees is the purchasers' responsibility to pay. Buyers should check with Customs in their country about any import tax/duties/customs fee/carrier fee before buying. Refused packages are subject to a restocking fee Return Policy - Warranty: As a leader in the electronics industry, we want to ensure that each transaction ends with a positive experience. Therefore we offer a FREE no questions asked 30-day open return policy. All devices are further covered by a 90-day functionality warranty, please contact our customer service team for more details. Customer Service: All messages will be responded to within one business day. Closed on Saturday, Sunday and all major US holidays.About UsEMB Phones is a prominent company in the electronics industry that stands for excellence and loyalty to its customers. Our goal is not only to provide high-quality items at the best price but to offer the best customer service and support for our customers. Buy with confidence knowing that you are in good hands and let us take care of you! Buy With Confidence!