XArmor U9W Nano USB RF 2.4 GHz Wireless (and Wired) Mechanical Keyboard with Cherry MX Brown Switches - Includes USB Power Cord for Low or No Battery Operation Perfect for Keyboarding Gaming or Typing

It's currently Aug 2018 and Amazon says I purchased this keyboard in Jul 2012. I knew it had been a while.I remembered really liking the feel of the old IBM PC AT keyboard, but hating the machine-gun noise it made. Man, it was loud. Then, I learned about the various Cherry MX keys. That prompted me to look for a replacement to my Logitech dome keyboard. I'm happy I did.The Cherry MX Brown has a really nice feel, to me. Smooth, and not much resistance. And, it's reasonably quiet.I wanted wireless, because I use an old Ergodex DX1 for gaming. The wireless lets me easily move this keyboard out of the way without having to deal with wires getting caught on things on my desk. I read here that this keyboard is not a particularly good gaming keyboard, because it doesn't have n-key rollover. I don't use it for realtime gaming, so that hasn't been an issue.Wireless response is plenty Good Enough. I discern no lag most of the time. I have my tower under my desk, and I almost never see dropped or repeated keys. But, every once in a while I see long delays, and then a burst of characters. Usually, scooting the keyboard an inch in any direction is enough to clear the interference. It doesn't happen often enough to bother me.Battery life is seemingly forever. I use NiMH batteries. I don't keep track of how often I change them in my keyboard, but my vague impression is once a year or so. And, this is on my main work machine, so I'm typing a lot. The cover for the battery compartment is actually a bit of a pain to get open. If I had to remove it more often, it would probably loosen up. But, since it's only once a year, it's not a big deal.There are a few features that I wish it did have.I would prefer if it had lights built in to the numlock and capslock keys. Or, more obvious markings on the keyboard for the purposes of the lights that are there. (As has been noted, no capslock light, at all.)The lights it does have take up a ridiculous amount of space. I would greatly prefer if that space on the upper-right were used for media controls. The one I would be most interested in is volume control. (I ended up getting a Fusion Control USB volume control that I mounted in my tower, within reach.)I don't use the wrist rest. It's just a simple hard piece of plastic, and I would find that pressure on my wrist very uncomfortable. The "attachment" really is the weakest part of the keyboard. I couldn't find any way to snap it on. It appears to just rest on top of the nubs, and a little overhang holds it in place. Meaning, any time I lift up the near edge of the keyboard an eighth of an inch to adjust it, the wrist rest would be left behind. I could see that getting old, fast.As I stated at the top, I've been using this keyboard for six years, now. It's still very solid. It has a great typing feel, and even though it's pretty austere, it's plenty Good Enough. There are a lot more options for wireless keyboards with Cherry MX Brown keys today, than in 2012. So, I'm not sure if I'd end up with this keyboard, again. But, if I did, and all I needed was a good typing keyboard, I think I'd still be happy with it.

I love the physical responsiveness of the keyboard. It's great to type on.The annoyance I have is with the wireless interface.Every half our or so, the keyboard becomes sluggish feeling and key presses are inaccurately recorded.I use the keyboard for software development, so this affects my productivity and sanity.I wish the wire that it came with would transfer data, but it's only for charging.Lesson learned here. I'll never buy a wireless keyboard again. When I type a letter, I want it to show up, simple as that. 99.9% of the time is not Ok.

I purchased this in February of 2016. I'm a prolific writer at work, and squishy keys aggravate my fingers. For typing, the mechanical keys are solid. However, the left control button keeps popping off, as of a little more than a month ago...so 1 year and 8 months of use?Another negative is the relatively weak signal from the wireless transmitter. It could not transmit clearly through my wood desk at a distance of approximately 2 feet. This caused garbled letters, doubled letters, or the occasional unresponsiveness. I purchased a USB extension cable and positioned the transmitter on my desk with about 15 inches of direct line of sight. This has been effective, though I have to ensure that I don't put items between the keyboard and transmitter. Water bottles, bowls, or very tall post-it pads wreak havoc until I move them out of the way. My previous Logitech MK700 keyboard seemed to have a better signal and error correction. Though, it also had difficulty transmitting through the desk.The final negative feature is the lack of special buttons. I used to have an old Logitech MK700 keyboard and mouse and I got used to the volume control and calculator keys. This keyboard doesn't have them, but I was able to map some hotkeys with AutoHotkey and haven't missed them since.Overall, I'm ok with my purchase. It hasn't thrilled me - mostly due to the weak transmission signal. However, they keyboarding has been pleasant and my fingers feel better for it.