Brilliant keyboard, tactile keys make typing pleasurable and easy on my fingers, plus the trackball instead of mouse has reduced the strain on my wrist. Not having a wireless connection is also a bonus, there's no "black spot" on my desk for this and, in the long run, not having to replace or recharge batteries is good for the environment. It's well made and feels robust, so I'm looking forward to many years with it.Delivery time was quick, packaging was robust, it arrived with zero damage and early. Can't ask for more.

La tastiera soddisfa egregiamente il suo compito. La pressione dei singoli tasti è davvero soft e reattiva ed il trackball è comodo da utilizzare e sensibile sin dai minimi spostamenti (i tasti destro e sinistro sono perfettamente posizionati sotto la sfera e la rotella di scroll è tarata con il giusto scatto di scorrimento)Il prezzo però mi sembra un po' altino

Cumple las expectativas, aunque el tacto de las teclas no es agradable, eso sería una mejora significativa.

I bought this keyboard as a backup keyboard when I'm sitting in a recliner. My normal setup is a Kensington SlimBlade trackball and a top-shelf mechanical keyboard. This is a great replacement, especially when I'm traveling but still want a full keyboard/trackball. The trackball itself is trapped in the keyboard (you can push it out with some pressure for cleaning), which is really nice so it doesn't go bouncing across the room!The keyboard has a bit of an unusual layout, because it's narrower than other 101 key keyboards. Some things are in weird places, particularly the Home/Delete/etc keys, but that also brings in the trackball to be close to the (normal layout) numeric keypad. Overall, it took me just a few hours to get used to this layout, and I'm very picky about things like that. (I got the US version with the pipe/backslash keyboard over the Enter key, where it belongs!) The Delete key is in a strange place, compared to most laptop keyboards, but at least I won't accidentally hit it.The keys themselves have a nice travel and click, but not overly obnoxious or even loud like an IBM Model M keyboard. They're probably about the same volume as Cherry Brown switches, but not quite as satisfying to press. However, I can type pretty quickly with this keyboard and the keys are nicely shaped, except that the keys are pretty smooth and not quite enough texture (so your fingers slightly slip, but if that bothers you you can add grip stickers). Note that these keys are basically about the same as nearly all mid-range keyboards sold on Amazon, and even some high-end ones, so that's really not too bad.The cable is great - long, fabric covered, and with two sturdy looking plugs. I would have preferred to see a bit more strain relief at the keyboard end, because it arrives bent into the box and I don't want it to get damaged, but it's really a very nice cable. The entire keyboard is plastic-covered, which I prefer because it won't bother me if I'm wearing shorts and metal doesn't really add anything here (the keyboard is very stiff and doesn't flex even when I bang very hard.) If plastic-covered was good enough for the IBM Model M, it's good enough for anything.Given how extremely unusual it is to even find a keyboard with a built-in trackball (let alone such a great trackball -- it's very good, even if it's not quite as good as a Kensington Slim Blade which costs about as much as this keyboard by itself, or my Das Keyboard which also cost as much as this keyboard!) and given the quality of the keyboard itself and the great price, I'm definitely giving this my highest recommendation. Once I got used to the layout and realized that I might even be MORE productive with this slightly compressed layout, I might even ditch my other fancier equipment.If this is Perixx's first try at a trackball-keyboard combo, it's a stunning debut... I'm a huge fan!

The lighted version has full individual key RGB lighting! It has 6 different lighting modes including a very catchy raindrop mode where each key lights in a random colour then slowly fades (about 1/2 the keys lit with different colours at any time). It also has solid light modes of different colours you can choose, and a breathing mode where a wave of colour moves across the keyboard. Finally, it has a mode where random colours emanate from each key you press and flow throughout the rest of the keyboard! Very fun to watch.The keys are true mechanical keys, smooth (no click as you press them), but of course noisy as you type and each key hits the bottom of its travel. Very comfortable though. And enjoyable to press, you feel like you're pressing something of value and luxury with every keystroke. (This is my first true mechanical keyboard.) The trackball is amazing, full size trackball, what more can you say? Beautiful red colour, smooth texture, and smooth feel to rotate. Two DPI settings (Fn+F9), modern normal fast and very fast. The wheel is notched and tilts, and the mouse buttons have a good click to them.The layout of the Ins/Del/Home/PgUp/PgDn/End is quite logical I think. You use Fn+ Ins/Del/Home/PgUp/PgDn/End to change the light modes, although this is not labeled on the keys unfortunately. Fn+F12 for colour selection, and Fn+F11 for brightness (4 steps). Max brightness is sufficient for a reasonably lit bedroom, but it's not super bright. Fn+Arrow Keys adjusts the direction of the breathing pattern too.The keyboard is a little thicker than usual probably to make space for the thickness of the trackball, but it's nothing major. There is one little quirk with the trackball, though, and it's that it seems to have a sleep mode. If you don't touch it for a minute, it takes about a third of a second to wake up when you touch it next time so the first bit of movement is lost. Seems completely unnecessary for a wired product.The overall feel and weight of the product is very good. The lights turn off when the computer sleeps, and when it wakes up the previous lighting mode continues. However, when you switch lighting modes on the keyboard (eg. away from solid colour to another mode, and then back to solid colour), the solid colour you had chosen is not remembered. (It defaults back to red.)Wish list for me would include duplicate mouse buttons on the left side/edge of the keyboard, so that I can click with my left fingers while my right hand is on the trackball, without having to lift/move my fingers off of it to click the buttons below. Back and forward buttons on the left and right side of the trackball respectively. And maybe even duplicate mouse left and right buttons above the trackball, for maximum flexibility of which fingers to click with (you pretty much always have to use your thumb to click the buttons below it I find). Having duplicate mouse buttons 1 & 2 (left and right) on the left side/edge of the keyboard would also help in being able to make precise, extended movements of the ball while holding and releasing the buttons at the precise moment, eg. when photo editing or selecting files.The trackball is amazing. Why not have a whole trackball in the same space as an standard keyboard? Great for using the keyboard on your lap and having everything in one place and in one unit.

I bought this keyboard to make it easier to work while my arm is in a sling after surgery. My overall impression is that it is solid and well-built with good tactile sensitivity. When I received the box it rattled, and on opening it discovered that four keys had come off in shipping. Not a good sign but I was able to snap them back into place (with one arm) and went ahead and installed it.There are three indicator LEDs above the trackball for NumLock, CapsLock and ScrollLock. Turns out the Caps Lock LED did not work on this one, which led to my returning it and I replaced it with the same model. This was through Amazon and not through the manufacturer.The replacement was fine out of the box and went right to work. After 1-2 days of working with it I discovered I was struggling to see some of the key overlays, and I realized this was because there is not enough contrast in the key labels: they are gray over black, instead of white over black. Also, as it turns out, this keyboard is not directly compatible with the IoGear GCS1462 KVM switch I use to flip my keyboard/monitors from my workstation to my laptop (I lose the keyboard hot-swap capability, so I have to switch by pressing a button on the KVM; a bit of a nuisance).I then returned that one citing the incompatibility with my KVM and ordered the backlit version (Periboard-322), which is another $50. I've never spent this much for a keyboard/trackball combo, but I use this professionally and need the built-in trackball for about 6 more weeks. The backlighting took care of the squinting issues, and I believe this will be a solid keyboard for many years.Note: I don't use any of the multimedia-key features, and I set the backlight effects to 'on' and 'white'. There are a lot of options for crazy wavelike and sweeping or raindrop effects that probably appeal to teen-agers (I guess).My 2-star ERGO rating is for the non-backlit version, which to me is hard to see under some lighting conditions because of the lack of contrast.PROS: - Solid feel, substantial weight - Excellent tactile feedback and response of keys without being too noisy - Simple clean installation with no associated drivers to installCONS: - Documentation is a bit light - there are two USB cables on the backlit version and no instructions as to which one to use; IT DOES MAKE A DIFFERENCE. - It would be nice if you could program the wheel button for something else, like double-click. Again, no documentation here. - Clustering/arrangement of Home,Delete, PgUp, PgDn and other control keys are a little odd and take somegetting used to, but this is not a show-stopper.Overall: unless/until something breaks, this is a solid keyboard for someone who uses a workstation in a coding environment (non-gaming) for 8 or so hours per day. It's a bit on the pricey side but there are not a lot of keyboard/trackball options out there, and that's what I need for now.**UPDATE 2/23/2020: Something actually did break: after about two weeks, the backlighting no longer works. Returning this keyboard, and dropped the rating accordingly. I am all done with this one.

**Update** i made a note in the review below about the small amount of static friction on the track ball, below. I picked up a tip from elsewhere online which is to get a plain candle and rub it all over the ball to give it a coating of the candle wax then spin the ball around in all directions for a while which causes the synthetic bearings to also be coated with the wax. This has made the track ball super smooth with less static friction than before.Been using this for a good 8 months now so thought it was time for a quick review. I can't quite get my head round the negative reviews on here - I've been using this keyboard for work, solidly for the last 8 months - the quality of the mechanical keys is lovely - brown switches so nice and tactile without being annoyingly loud like the cherry blue types for in the office. It's US layout, but to be honest I much prefer this to UK layout now and have switched to a US layout keyboard at home too - but be aware if you're looking / expecting a UK mapping. i bought he non-illuminated board and the keycaps are the same as the illuminated one by the looks of it - so they're properly produced keycaps where the letters will not wear off with use unlike 99% of the cheaper keyboards I've ever bought with printed caps which have been worn off completely on the most used letters over the years.The integrated trackball is, well, nothing like the usual rubbish that gets integrated into a keyboard. I was a bit worried about the button and scroll wheel placement to start with but turns out to be really usable for me. The scroll whell is "notched" not free rolling so basically like a big version of what you'd get on a mouse. I only just realised the other day that pushing left and right on the scroll wheel actually does horizontal scrolling too - probably detailed somewhere in the instruction book I never bothered to read. Trackball movement is really nice, it's up there with the big kensingtons etc - it's "clicked" into place so doesn't just lift out of the board (so the ball won't just fall out if you move the keyboard). It's optically tracked and really accurate, there's two dpi settings selectable from a function key / f9 combination but there's no indication on the board of which DPI mode it's in but I don't really change it very often. I've yet to have had to take out the ball for cleaning also seems to be really good at not picking up and accumulating dust etc.It's a lovely solid, decent built keyboard with a bit of weight to it. Will probably last years. Braided USB cable. What's more to say. Really happy with it - absolute bargain given how much you'd pay for a trackball of this size and quality and a decent mechanical keyboard if bought separately.