Adesso WKB-3500UB Tru-Form 3500, 2.4GHz Wireless Ergonomic Trackball Keyboard

Wonderful keyboard. They wear out and last about two years.

Love the keyboard, trackball needs a right/left hand option.

This keyboard is very cheaply constructed for one costing close to $100. The keys clack noisily and some are hard to depress causing numerous typos because certain keys require a harder keystroke than others. This slows down and disrupts the typing process and requires numerous edits to complete jobs, which negatively effects productivity. Definitely not worth the money. I kept hoping I would get used to it and alter my typing style to make this work. But it I went back to my $30 wired keyboard after just 3 days. Too many typos and lost productivity.

Fantastic keyboard. Fixed my arm pain that I was having using a side mouse.Having it on the keyboard infrint of me and the ergonomic keys are amazing.I love the roller ball, super smooth and accurate.Love love love .

Only negative thing I can say about this wonderful keyboard is that it is loud if you are a fast typer. Other than that, it is a great all-in-one device!

Pros:- Split keyboard is a vast improvement in comfort and use which improves typing in general.- Angle makes previously distant keys (like the number keys etc.) are very much easier to locate and reach.- Each key has a dip which makes it easy to locate the keys by feel.- Each key has lots of travel, so I am allowed to touch the relax my fingers without pressing keys.- A function shift key does not exist and is not needed because there is a extra row of smaller keys above the function keys.Cons:- Certain keys love to stick.- Track ball requires a specific amount of pressure to operate.- Track ball tracking is coarse.Story:Day 1: Seemed great -- tossed box.Day 2: Nightmarishly sticky left control key. Got a replacement. Seller was very cooperative.Day 1 of new keyboard: Always sticky z. Learn to trim edges to keep from sticking.Week 1: Randomly sticky space bar (can see it stuck down).Week 2: Space bar quit sticking. Predictably sticky y. Learn not to press the y key on left side so that it won't stick down.Week 3: Track ball quit working. Chose to edit this post and track ball working again.Week 4: Keyboard hit the trash can. Gave up on track ball which now never works. Keys seem to physically release, but randomly sticking for randomly short periods. Keys randomly not working less frequent than random repeats. Completely unpredictable keyboard. Getting worse each day. Relief that it is now gone.I gave it two starts because the ergonomics was good, but I should give it negative two because I now feel the flat ergonomics of my old keyboard. I'll get used to flat again because the DbPower keyboard works. It also happens to be much prettier with its low blue cast.

Love this keyboard, once in a while the mouse keys will stick but haven't lost any work because of it. Excellent for someone who doesnt use 10key or is trying to get better at not using 10key!

It looked like it would work, but the bluetooth connector was missing, so I had to send it back. Lesson learned on buying a used product I guess.