For all engines we highly recommend using the EXR textures from Marso, but PNG will also work.
Import your mesh from the Alembic: (camera can be hidden or deleted)
Set your render settings to Cycles and GPU:
Now in the Shading workspace create a new material on your mesh object with the Principled BSDF:
Then load in your image textures using an image node:
Connect them up as shown, being careful to set all of their Color space to Linear except for Normals which should be set to Non-Color and should go into the shader through a Normal Map node with the UV map selected.
Your textures are now ready to use in your scene:
