Pulled from brand new Antminer S21 PSU's that were going in immersion and thus did not require fans. Never used before.
Can be used for any APW12 variant PSU for air cooling, but is pulled from S21 units, so is ideal for use with those units.
Please note, these will not fit 17 series miner power supplies, only S19, L7, etc. generation miner power supplies etc