mCable supports a subset of HDMI 2.0:

  • 2160p60Hz YCbCr 4:2:0 (in pass through mode)

Refer to mCable Product Brochure for the full specifications, but in short mCable is an HDMI 1.4b compliant device with support for 4K, 3D and ARC.
mCable also helps solve interoperability issues between some HDMI 1.X source devices and HDMI 2.X TVs.