The VM0202H is a HDMI 2 x 2 matrix switch that meets the specifications of HDMI Specification, including 3D, Deep color up to 12 bits and transmission rates up to 10.2 Gbps.
Ref : VM0202H-AT-G
The ATEN VM0404HA 4x4 4K HDMI Matrix Switch supports 4K resolutions of UHD (3840 x 2160) and DCI (4096 x 2160) with refresh rates of 30 Hz (4:4:4) and 60 Hz (4:2:0).
Ref : VM0404HA-AT-G