This is a Keyboard Filled icon. We've made it in iOS style, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 12,800 icons, all in the same style and quality.
The icon is a keyboard with a simplified key layout, consisting of a rounded rectangle filled with a series of solid squares and rectangles, representing keys. It has a curvy wire leading out from the top.