The mouse now works perfectly with not even the slightest hint of a problem. I am assuming this distance is enough to get the thing out of the RF noise "Near Field". I took a 36" high quality USB extension cable and relocated the Logitech Unifying receiver about 24" horizontally to the side of the computer. The total energy emitted I believe is regulated by law and indeed very small but, relatively speaking, must be high right on the motherboard as is the location of the USB connectors that are part of the motherboard. I think it is very reasonable to assume any motherboard is an excellent source of a lot of RF radiation at multiple frequencies and a Fourier Transform wet dream of wave forms. I had the Logitech Unifying mouse plugged into a USB 2.0 port on the back of my machine in a port integral with the motherboard. Coincident with this I stumbled on an article about RF interference and USB wireless devices and the light bulb suddenly lit. This mouse sucks because the two buttons on the left side are so incredibly sensitive I kept inadvertently jumping between browser pages. So, I threw in the towel last week and bought a hard wired Logitech M500 USB mouse. A call to Logitech tech support got a woman in the Philippines with a heavy accent, scripted only knowledge, and chickens loudly clucking in the background (honestly - she verified she worked from home and the noise was indeed chickens). I Googled the problem and found a ton of stuff going back a number of years referencing this exact problem with Logitech wireless devices but nothing I found proved helpful. Sometimes no problem, sometimes the mouse was unusable, but a problem at some level most of the time. I immediately noticed the cursor would momentarily freeze and the extent to which it froze or stuttered varied with no obvious connection to anything else. The Logitech K800 Wireless Illuminated Keyboard will provide all the light you need to work into the night and a quieter, more comfortable typing experience to boot.I recently started using a Logitech MX Anywhere 3 wireless mouse using their tiny USB Unifying receiver. With our increasingly 24/7 workdays, backlit keyboards are more of requirement than ever. Keystrokes felt more uniform and I felt more fleet-fingered as a result. Research shows that the deeper travel requires less keystroke force than the 2mm to 2.5mm of travel allowed by typical laptop keyboards. No doubt this is the benefit of the PerfectStroke key design, which enables a key travel of 3.2mm. The keys were neither sticky nor too clicky, and were noticeably more comfortable to type on. Thanks to the full-size keyboard, touch-typing was seamless moving from my regular keyboard to the K800. All I had to do was plug it into a USB port and the keyboard was up and running. The K800 uses Logitech’s unifying receiver, a 2.4GHz USB dongle that provides better connectivity and allows you to connect multiple mice and keyboards to one computer. Logitech also included hand proximity detection, so that the backlighting will dim when you pull your hands away from the keyboard and brighten when you return them. You can reduce or increase the brightness by pressing the secondary function key-located to the right of the spacebar between the ALT and CTRL keys-and F5 or F6, respectively. When activated via an on/off switch at the top right, the characters on the laser-etched keys are backlit. The K800’s signature feature, though, is its illumination.
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