For the price, good quality

None so far

- Wireless - QWERTY - Plug and Play with no additional steps - 2 x AA batteries - Additional features and functions exclusive to the keyboard - Did I mention ZERO config and setup and easiest plug and play?

Nope. none. Nada. Zilch.

Fast refund from newegg

no usb adapter can't be used

Fast refund from newegg

no usb adapter can't be used

I purchased two of these as Refurbished... One looked brand new with the protective plastic still on it, and the other could also pass as new... Both worked perfectly.. Both easily paired (Unified) with a wireless Logitech mouse that I already had..

Perfect size leaves room for mouse to move freely. Both units bought worked flawlessly out of the box. Great price.