Compact mini-tower design: Reduces footprint on desk. Hot pluggable: Allows you to dock and undock or connect and disconnect devices without rebooting the system. LED on front: Displays connectivity status. VGA monitor output: Supports video resolutions up to 1440 x 900 at 60 Hz; 1400 x 1050 at 60, 75, or 85 Hz with superior quality. No additional cables are necessary. VGA monitor port. Dual display settings: Allows you to switch between primary and extended video modes with the push of a button. One forward-facing USB 2.0 port: Ideal for use with memory keys and other "quick access" devices. This USB 2.0 port is backward-compatible with USB 1.1 devices. Four rear-facing USB 2.0 ports: Ideal for most USB devices, including printers, keyboards, and mice. These USB 2.0 ports are backward-compatible with USB 1.1 devices. Stereo headphone-out jack for speakers and headphones. Microphone-in jack. USB-to-Ethernet (10/100) dongle: Connects to Internet/LAN connectivity. Supports Windows XP and Windows Vista (in normal and Aero modes)