I think it would of been appropriate if u posted this in the accessories section.
anyway to answer your question
i think the MHL cable is not available yet, Accoring to clove.co.uk, its available in june.
I think the MHL is the standard, and u just need a cable that has micro usb on one side and hdmi on the other.
although the ones at clove has a block on it, i think this allows charging from a plug socket with a standard micro usb cable, becasue i think there are no MHL tvs available at the moment.