(wikimedia.org) A350 thrust levers without the flanking trim wheels.
Why don't the Airbus A380 and A350 have trim wheels?
On the other fly-by-wire Airbus aircraft the trim wheels are there for manual trim in case the aircraft went into direct law since the Airbus sticks do not have a trim control.
Were the trim wheels replaced by another interface? Or is the manual trim option completely removed due to a certain [backup] technology?
Left: Standard Airbus sidestick on the A350 with no trim control (wikimedia.org). Right: Trim wheels on other Airbus aircraft (wikimedia.org).
The question stems from this comment:
I don’t think [having trim controls] is strictly speaking necessary. It used to be the mechanical backup for FBW failures on early Airbusses, then it was kept a while for commonality. I am not sure whether the A350 still has it?