It's not been forgotten, it's been removed because the Titan Fenrir fan you ordered is a large cooler and cannot fit inside the case with the fan remaining.
It's not been forgotten, it's been removed because the Titan Fenrir fan you ordered is a large cooler and cannot fit inside the case with the fan remaining.
1. A wire has not moved during delivery and is stopping the fan from turning.
2. The connection to the motherboard (the fan connects via a chassis fan connector) has not come loose.