... USB Power Plug Up and Down, Pitch Angle Adjustment Ultra-low Power, wind Volum USB Mini fanUSB Plug DC5VUp ... USB transformer can be purchased on its own power supply, the proposed purchase of 5V, 1000MA ... smoke and odor, turn off power switch and pull away from the plug to connect the computer equipment ... Removal of the goods when tile power cord, hold down the plug pulled, the cord can not be ...