Model R9-NBC-XL2K-GP (USB Hub version) /  R9-NBC-XL2E-GP (w/o Hub version)
Color Black
Materials Metal + plastic
Weight 0.795kg (28.04oz)
Dimensions 330 x 251.2 x 28.2mm (12.9x9.8x1.1 inch)
Fan Dimensions 140 x 15mm (5.5 x 0.59 inch)
Fan Speed 700 – 1400 ± 150 RPM / 1100 ± 150 RPM (w/o hub)
Fan Airflow 46.8 CFM  / 38 CFM (w/o hub)
Fan Noise Level 15 – 21 dBA
Power USB 5V DC
USB
Mini USB x1 + USB2.0 x2 (USB hub version)

USB 2.0/1.1 x1 (w/o hub version)
Current Consumption 0.20 - 0.34A / 0.25A (w/o hub)
Power Consumption 0.9W - 1.7W / 1.25W (w/o hub)
Compatibility Supports up to 15.6" laptops