Logitech K740 Illuminated Usb Keyboard Not Working

I edit photo files under low light the illuminated keyboard is a necessity. The Logitech K740 Illuminated Keyboard has a great touch with what I feel is the optimum depth of key movement.

Best keyboard, 5 stars! This is my second Logitech K740 illuminated keyboard, my previous one lasted 12+ years of heavy-duty use. I love the back-lit keys and the smooth quiet function. I'm very glad I was able to get this same keyboard again. I love my Logitech rollerball mouse too.

I got the best price and a rebate at B&H. The Logitech illuminated keyboard is totally slick. ...

The illuminated keyboard made by Logitech is better than I expected and I am enjoying it very much. It is a great tool for use by an older person like myself, and for anyone using a keyboard in low light conditions. A great product from a Great Vendor. Will consider B&H for all my future purchases. Thanks Logitech and many thanks to B&H.

Illuminated Keyboard by Logitech is vary nicely made and the size and feel of the keys are great the key light has 3 settings so it is vary easy on the eyes in darkness and with the softweare it is seamless working with your system.

For years, I have been looking for a well made illuminated keyboard. Logitech seems to fit the bill well with this model. It has a fine touch and makes prolonged typing and data input much easier. Enjoy, enjoy.

This is my third Logitech illuminated keyboard so you know I like these. I use these for both general computer usage and for printing in a dark or lowly lit room.

This keyboard is exactly what I was looking for for my home office. The illuminated keys are great for working in low light. The keyboard feels sturdy and well made and it looks good.

This keyboard is really magic. Handy, slick and illuminated

I use this keyboard on my desktop computer and I have to write that it undoubtedly has to be the best performing keyboard around. The great thing about it is that it requires no batteries, its corded (USB), so there is no lag time between the computer and the keyboard as battery performance winds down. The keys are quiet while typing and easy on the touch (short key stroke). Of course being from Logitech, the software is an easy download from Logitech and the keyboard is fully programable. Another great thing is that it is low profile and sturdy, it has some weight to it but not bulk, so it stays put on the desk while typing and of course, it is illuminated and has variable illumination at the touch of a button. Multimedia? Of course, more than I would ever require but it is there for the web surfer if needed. Probably the best feature of all in my opinion is that it is a USB keyboard, meaning no batteries to buy and personally I have never been fond of wireless from the beginning but somethings leave you no choice but then again, Logitech does. If there is anything about this keyboard that I don't like, I have not found it as of yet and I have two of them, one I have been using well over a year now and another thing is that there are no character decals on the keys, so no E's or T's falling or rubbing off after a months use or so. So, if you are not into wireless, purchase this keyboard from B & H, you'll love it.