This mod adds only one block, an "ME Capability Adapter", it basically allows Applied Energistics connections over things that proxies capabilities, such as Compact Machines 3 Tunnels.
Requires Applied Energistics 2, obviously. Not tested with Applied Energistics 2 forks (such as Applied Llamagistics), may or may not work.
Note: Requires one at both ends, also can only carry 8 channels. This is also something I made for my own use and thought that others may find it useful.
Credits: AE2 Team for AE2 and the textures which I based mine off.