ASUS USB 3.0 VariDrive+Dock One-of-a-kind Invention by ASUS 2-In-1. Full USB 3.0 dock plus DVD+/-RW Slim & Sleek all-metal finish. ASUS Zenbook concentric-circles design. Slot-Loaded Super-Multi 8X DVD+/-RW 3 USB 3.0 outputs, 1 HDMI output, 1 VGA output, 1 High-Speed Gigabit 10/100/1000 ethernet output Single USB 3.0 connection to dock to your laptop or favorite device. No need for external AC power when using USB ports, ethernet, and/or optical drive