Perixx Periboard-521 Wired Trackball Keyboard with Numeric Keypad, Build-in 0.55 Inch Trackball with Pointing and Scrolling Feature, Full Size, US English Layout,Black,PERIBOARD-521 US

This is a good keyboard. A bit longer than normal but it's still within an inch or two. I like the ball but it's a bit to get used to. Once you get the hang of it it's smooth. If the ball sounds rough when moving it. There is a little screw cap you take off to clean it! Over Happy with my purchase

Perfect for use as an external keyboard for a chromebook. Keys, trackball and numbers are perfectly situated for doing tax returns. Had to send first unit back because the ball was impossible to be removed for cleaning when complying with the instructions. Second unit was one step less than impossible, but I did get the ball out with great difficulty and a couple tools. Once broken free it works fine now.

I like this keyboard, it works for my application. First time with small trackball, it is challenging, but it works.

SEE UPDATE FOR WHY IT'S NOW 1 STAR INSTEAD OF 4This is a good keyboard in general. Seems to be well-made. First impressions are as follows:The good: Trackball is smooth and doesn't move around unnecessarily, mouse keys are solid. Seems sturdy, much better made than my previous keyboard with built-in track pad.The not so good: Keys take more pressure than I'm used to. I have neuropathy, and this makes typing with this particular keyboard a bit slower (not a problem most people will have). Also, the "built-in scrolling" is not as convenient as I had hoped. You have to activate FN+F10 to toggle it on and off, which is two extra steps. It would be nice to have a scroll wheel next to the track pad, but ah well.Overall: Hopefully this one will last me. I'm not having some of the issues I had with my previous combo upon unboxing, but am disappointed in how inconvenient the built-in scrolling feature actually is. Will update if anything drastically changes.UPDATE: This keyboard was great for 34 days. Yes, 4 days past the return window. Then the spacebar got really finicky on the right side (I always press with my right thumb). I checked for dust, nothing. Then within an hour, it was hard to press on the left side...and now is even finicky in the middle. If only this had happened 4 days ago. What a waste.

The keyboard worked fine for most of the 2 years I owned it. I like the height and feel of the keys. The track ball never really lived up to my expectations. It did not roll smoothly as new and never improved. I did clean it (which is not easy) which improved the rolling but it was never better than when it was new. The placement of the arrow keys turned out to more of a nuisance than I expected. It also suffers with poor finish on the keys as shown in the picture and the space bar is now very smooth and shiny. That is consistent with cheaply made keyboards that are much less expensive than this one.

I work from home with a huge monitor that takes up most of my desk so I wanted a keyboard with an integrated track ball to save space. The design and layout are perfect. However, most of the keys stick and you have to really jam them down to get it to type. Most frustrating keyboard I’ve ever had- the keys should be easy to press down and type- it’s a keyboard for heaven’s sake- by definition the keys should type!!! And, it’s really noisy. The clicking can make you a little nuts by the end of the day. Very disappointed.

My wrists thank me. It takes a bit to get use to the tracker ball, but I starting noticing my wrists' pain decrease almost immediately. Also, the setup was very easy and instantaneous; would definitely buy again.

This is a hard to find keyboard with a built in trackball just to the right and lower edge of the keyboard letters and the key pad on the right of the trackball. This prevents most carpel tunnel problems that occur with a mouse. Thank you for a great product.

Got 2 of these keyboard/trackball combos, and love them both.Perfect for my studio workstations, and great for many professionals on many levels.Very satisfied customer ;^).

Ho acquistato una tastiera Perixx PERIBOARD-521, i tasti non corrispondono con i segni, ad esempio la @ non riesco a trovarla in quanto non corrisponde con il tasto. Ho scaricato anche il manuale in Italiano dal sito ma niente.Se mi viene risolto bene se no chiedero la restituzione

US配列でトラックボールつき。。。ロマンキーボードとしてはかなりいいものだと思った。でも、スクロールができないのは想像以上にストレスを感じる。また、致命的な問題があり、エンターキーが陥没する。キートップ外して発覚したけど、ゴムが右端にはあるけど、左側はただの空洞であり、右側のゴムだけで反発していた。。。。全体的にチープだが押し心地などは悪くなかったのだが、エンターキーが使えないのでは仕事で使えず返品。