#1	Dual boot computer keys and more than a single button switch life more than doubled Damage can continue to use a single key does not affect the normal business of Internet cafes super practical
#2	With two USB20 interface the equivalent of a USB HUB super affordable
#3	With an audio interface and a microphone interface the same applies to home users
#4	Attractive appearance pale bluish light boot warm and elegant Delicate butterfly fly volume rarely occupy desk space