When using a USB 2.0 2.4GHz wireless peripheral device (such as a mouse, keyboard, or headphones) with a PC that also has a USB 3.0 peripheral device plugged in, you may experience erratic operation caused by interference. This is especially likely to happen when using USB 3.0 remote hard drives or flash drives.This interference may result in:<li>Delayed response to mouse or keyboard inputs</li><li>Missing keyboard characters or mouse commands</li><li>Decreased operating distance between the USB 2.0 wireless device and its receiver</li>There are some techniques that can help early adopters of USB 3.0 to mitigate potential problems with their existing 2.4GHz wireless devices:<li>If your PC has multiple USB 2.0 connectors available, separate your USB 3.0 and USB 2.0 receivers by as much distance as possible. For example, if your PC has a choice of USB 2.0 connectors, use the one on the opposite side of the PC from the USB 3.0 connector.</li><i>Position your USB 2.0 receiver as close as possible to your wireless peripheral (mouse, keyboard, headphones, etc.).</i><li>Use a standard, USB-extender cable to position your USB 2.0 wireless receiver as far away as possible from your USB 3.0 connector.</li>NOTE: A USB 3.0 connector sometimes referred to as Super Speed USB or SS, normally has a blue plastic insert in the connector. Unlike a USB 2.0 connector which has 4 pins within the connector, a USB 3.0 connector has 9 pins.Move your USB 2.0 wireless receiver to the opposite side of your computer:<p align="center"><img src="https://www.reliancedigital.in/medias/Logitec-M187-Wireless-Mouse-490930211-48?context=bWFzdGVyfGltYWdlc3w3NjU5N3xpbWFnZS9qcGVnfGltYWdlcy9oZjEvaDdhLzk4NDcxODA1NTgzNjYuanBnfDExOTZhN2RlMzM4Yzc4MTA5ZjZjYjY5NWM3MjlhNzMyNTc5YTU3YzdmYjYzMjUxODc2ZTE0ODczNTcxYzk1NDY" width="100%" height="100%" style="max-height:368px;max-width:472px;">Make sure your USB 2.0 wireless receiver is in the USB 2.0 connector closest to your wireless peripheral:<p align="center"><img src="https://www.reliancedigital.in/medias/Logitec-M187-Wireless-Mouse-490930211-49?context=bWFzdGVyfGltYWdlc3wzNTQ0NHxpbWFnZS9qcGVnfGltYWdlcy9oNzkvaDNjLzk4NDcxODEwMTcxMTguanBnfDQxN2FkOWZiZWM3OGI2OWMwYWU5MTg4NzM5NDQxMmQ5YjllOTVmOGEwNzI0NzgwMTY5NjQwNTYzN2I4M2RmOWQ" width="100%" height="100%" style="max-height:400px;max-width:385px;">Use a USB extended cable to position your wireless receiver as far away from your USB 3.0 peripheral as possible:<p align="center"><img src="https://www.reliancedigital.in/medias/Logitec-M187-Wireless-Mouse-490930211-50?context=bWFzdGVyfGltYWdlc3w4MzkwM3xpbWFnZS9qcGVnfGltYWdlcy9oZTIvaDBmLzk4NDcxODExNDgxOTAuanBnfDIxNmE1ZjMxNDI3ZjBhMjJhZjk3MjI1MjA2ZDk0ZjUzYjE3MDQ3NDY5YjJmMWI0NmI3OWI0OGIwNmI2MDdjN2E" width="100%" height="100%" style="max-height:368px;max-width:593px;">

Your mouse uses an infrared (IR) optical LED light that is invisible to the human eye.If you're not sure whether your mouse is powered on, check the ON/OFF switch located on the bottom. When your mouse is:

The switch is pushed up and you see green next to it.

The switch is pushed down and you see red next to it.<p align="center"><img src="https://www.reliancedigital.in/medias/Logitec-M187-Wireless-Mouse-490930211-55?context=bWFzdGVyfGltYWdlc3w5NjY1NXxpbWFnZS9qcGVnfGltYWdlcy9oNGQvaDRlLzk4NDcxODE0NzU4NzAuanBnfDAxNDY1NTZjYjZjMGQ3Njc1NTM2MDRiNWQyNjQ0NjdkZDRjMzUxNWE4NWI1ZDczOGJjZmVjMjIxNzhiYzg2N2M" width="100%" height="100%" style="max-height:306px;max-width:555px;">

Your M187 mouse is a "Unifying ready" device that can be used with any Unifying receiver.If you've lost or damaged your receiver, you can purchase a replacement from the M187 Parts Store.To be sure you have the right receiver, look for this Unifying logo:<p align="center"><img src="https://www.reliancedigital.in/medias/Logitec-M187-Wireless-Mouse-490930211-55?context=bWFzdGVyfGltYWdlc3w5NjY1NXxpbWFnZS9qcGVnfGltYWdlcy9oNGQvaDRlLzk4NDcxODE0NzU4NzAuanBnfDAxNDY1NTZjYjZjMGQ3Njc1NTM2MDRiNWQyNjQ0NjdkZDRjMzUxNWE4NWI1ZDczOGJjZmVjMjIxNzhiYzg2N2M" width="100%" height="100%" style="max-height:306px;max-width:555px;">

To turn the M187 mouse on and off:1. Flip the mouse over.2. Locate the power switch on the bottom.<p align="center"><img src="https://www.reliancedigital.in/medias/Logitec-M187-Wireless-Mouse-490930211-55?context=bWFzdGVyfGltYWdlc3w5NjY1NXxpbWFnZS9qcGVnfGltYWdlcy9oNGQvaDRlLzk4NDcxODE0NzU4NzAuanBnfDAxNDY1NTZjYjZjMGQ3Njc1NTM2MDRiNWQyNjQ0NjdkZDRjMzUxNWE4NWI1ZDczOGJjZmVjMjIxNzhiYzg2N2M" width="100%" height="100%" style="max-height:306px;max-width:555px;">3. Slide the switch up to turn it ON.4. Slide the switch down to turn it OFF.

Your M187 mouse ships with the receiver shown below:<p align="center"><img src="https://www.reliancedigital.in/medias/Logitec-M187-Wireless-Mouse-490930211-59?context=bWFzdGVyfGltYWdlc3wyMjY4MnxpbWFnZS9qcGVnfGltYWdlcy9oNGQvaGNiLzk4NDcxODE3MDUyNDYuanBnfGU2Mjg2YjQxMGZkYzk1YWE5ZDY0NjExMGNmM2ZjZTlkNmViMDk3YjdiODUyZTMyNjBhNzliNmM1NmFjY2QxMjQ" width="100%" height="100%" style="max-height:150px;max-width:118px;">While this receiver isn't Unifying, you can connect your mouse with any USB receiver that displays this logo:<p align="center"><img src="https://www.reliancedigital.in/medias/Logitec-M187-Wireless-Mouse-490930211-60?context=bWFzdGVyfGltYWdlc3wxNzM0NHxpbWFnZS9qcGVnfGltYWdlcy9oYWQvaGJiLzk4NDcxODIwNjU2OTQuanBnfDViYTY4Mzc5ZjE5ZWY4ZmViMzlhM2NiMDY2MmU1NjNjNTk4NzU4ZWFkYmY2YjYyYzFjMWE3NzdiZjljYzYxNWM" width="100%" height="100%" style="max-height:82px;max-width:80px;">NOTE: Although a device may be supported by the Unifying receiver, SetPoint and/or Logitech Control Center (LCC) software support depends on the specific product.