* Plastica case and coated *Color: red,black,blue *Fully compliant with USB2.0/USB1.1 *Supports max:USB2.0, 480mbps/USB1.1, 12mbps *System requirement: Windows98/ME/2000/XP *Desktop or notebook with usb port *Expand 4 hub ports * Macintosh requirement: Support Mac OS 8.6 or above