300Mbps Wireless Range Extender 300Mbps Wireless Range Extender 300Mbps Wireless Range Extender Product Model Speed Power Supply Frequency Range Antenna type WD-R612U 300Mbps EU plug US plug 2.4-2.4835GHz 2 * 2dbi外置天线（固定） WD-R611U 300Mbps EU plug US plug UK plug 2.4-2.4835GHz 2* 2dbi external antennas (fixed ) WD-R610U 300Mbps EU plug US plug UK plug 2.4-2.4835GHz 2* 2dBi External Antennas ( Fixed ) WD-R607U 300Mbps EU plug US plug UK plug 2.4-2.4835GHz 2dbi internal antenna WD-R606A 300Mbps EU plug US plug UK plug 2.4-2.4835GHz SMA 2dBi antenna WD-R606U 300Mbps EU plug US plug UK plug 2.4-2.4835GHz SMA 2dBi antenna WD-R603U 300Mbps USB2.0 2.4-2.4835GHz SMA 2dBi antenna WD-R602U 300Mbps USB2.0 2.4-2.4835GHz 2dbi internal antenna