100% brand new and high quality! Supports Max resolution for HDMI port: 4K x 2K This adapter is used to mirror laptop content to the VGA /HDMI / DVI compatible HDTV or projector.You could switch the output mode as your demand Support multi-mode operating systems such as Windows,IOS,Linux ,Dos , and Unix DVI output, connect the DVI devices using a DVI cable. HDMI output, connect the HDMI devices using a HDMI cable. VGA output, connect the VGA devices using a VGA cable