Adesso AKB-510HB Mini Keyboard with USB Hubs Series: SlimTouch 510 Type: Scissor-Switch Technology Interface: USB Number of Keys: 78-Key US layout 2 Internet Hotkeys (Home, Email) 7 Media Hotkeys (Volume Dn, Volume Up, Play/Pause, Stop, Prev. Track, Next Track, Mute) Mouse Option: None Dimensions: 0.70 x 11.20 x 4.70 Weight: 1.10 lbs.