Designed for the on-the-go IT professional or field technician, the E-Legacy Extender from Dell™ can be snapped onto your E-Family Laptops through the docking connector and adds little weight to your system (0.45 lbs). It is ideal for those who still rely on legacy ports (serial port, parallel port, or PS/2 port) regularly. Additionally, the product gives you a comfortable work space. It is supported by Dell Technical Support, when used with a Dell system.