4 ports USB2.0 hub with switch, Provide four USB interface, The built-in current overload short circuit protection, High quality electronics to ensure stable running, Automatic identification of computer installation, no driver, plug and play, support hot plug, Independent switch, blue LED lamp, working status directly visible, Working voltage: 5V
Bluetooth/2.4G, Low profile bass keyboard for computers, mobile phones or tablets, Stylish and Slim Appearance, Compact Layout Save Desktop Space, Laptop Like Quiet Input Experience, Paired With Up To Three Devices And easy switching, Shortcut key Multimedia FN key
Channel 2:0, RMS/Channel (Watt): 3Watt x 2, RMS/Subwoofer (Watt): No, Output Power: 10W, Signal to Noise Ratio (dB): >= 45db, Frequency (Hz - KHz): 100Hz-20KHz, Sensitivity: 700mv+-50, Impedance (ohm): 4ohm.
3xUSB2.0 + 1 USB3.0 HUB, Support 1T hard disk, no need extra power supply, with polybag packing, Compatible with usb2.0/1.1/1.0, support MAC osv9.0, Windows XP/7/8/10 or later