When a unit equipped with Zero Drive dies, does the order of tap3/recycle then banish matter, and how does the banish cost work?

Ruling: When a unit equipped with Zero Drive dies, only the unit gets banished (not the equipment). Later, when Zero Drive is unattached, you can pay the cost and banish Zero Drive itself to play all units that died while wearing it this game for free.

Sequence:

• Unit equipped with Zero Drive dies
• Only the unit gets banished (Zero Drive becomes unattached)
• Later, when Zero Drive is unattached, you can announce you are playing its ability
• Pay the power, energy, and banish Zero Drive itself as costs (all at the same time)
• You can use add/reaction abilities (like exhausting for energy or recycling for power) to help pay these costs
• Play all units that died while wearing Zero Drive this game for free

Nuances:

• You cannot use Zero Drive's ability while it is attached to a unit
• This applies to all equipment - their additional abilities cannot be used while attached to a unit