Colour: Black Material: Metal mesh,plastic,Rubber Weight: 786g Product dimensions: 392 x 266 x 67mm (W/D/H) Fan Dimension: 140 x 140 x 15mm Fan Speed: 1200RPM Fan noise: 15~17.5dB (A) Bearing Type: Hydro Bearing Voltage Range: 4.5 – 5.5V 14 cm Fan, Large Air Flow, Silent. Two Port USB Hub, Meet USB Devices Use Requirement. Five Angle Support, Ergonomic Design, With The Use Of More Comfortable Feeling. Unique Non-Slip Technology, Ensure That The Notebook Use safety.