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The G19 also sports 2 USB 2.0 ports and channels beneath the tray that allow you to properly route any add-ons, like a USB headset. Like the G15, the G19 features multimedia keys, including a volume wheel, and a button that disables the Windows key. Also included with the G19 is a detachable wrist guard and AC Adapter to power the LCD.
The biggest change on the G19 is the 320x240 color LCD situated on a handy swivel in the center of the keyboard. Logitech has included some interesting applications with the software that lets you see just how good the LCD is. They include an RSS reader, CPU/Memory utilization monitor, picture viewer, movie viewer, email notification, and even a YouTube application that lets you browse a simplified version of the site. Audio is played through your desktop speakers.
Colors and visuals are surprisingly clear and crisp on the LCD and the addition of color certainly sets it apart from the monochrome display featured on the G15. However, when you combine the color LCD with the customization of the keys' backlight, the G19 ends up looking like something you would see on Pimp My Keyboard.