Matias Ergo Pro Keyboard for Mac, Low Force Edition Keyswitch Technology: Mechanical Keyboard/Keypad Connectivity Technology: Cable Keys Layout: QWERTY Localization: English (US) Keyboard/Keypad Host Interface: USB 2.0 For those who need (or prefer) typing with a lighter touch, a <span class="a-text-italic">Low Force Edition</span> of the Ergo Pro is also available.It uses Matias Quiet Linear switches for a smooth, low force feel. These same switches are used in stenotype machines, capable of typing speeds upwards of 225 words per minute. Thanks to our unique navigation cluster, the Ergo Pro is not as wide as other ergonomic keyboards. Its not much wider than a laptop keyboard. Weve included everything you need in the box. Theres nothing extra to buy. You are all ready to go. BUT if you did want to add a spot of color, we have replacement palm supports available in 4 gorgeous colors. As you would expect, the Ergo Pro comes equipped with leg supports for 9 tenting and 4.5 negative tilt. It can also be used flat. Colors offered in black Portable, practical, and efficient New navigation design Works beautifully