Hard to tell. Maybe just air rushing? Does it sound like a vibration in person? If it's a vibration then you would experiment with some damping to disrupt the harmonic causing the vibration, usually some tape or padding. If it's air rushing then you would want to find the gap and seal it with some tape. Kapton tape is good for electronics but any tape that doesn't get gummy when warm is probably fine.
A bus station is where a bus stops. A train station is where a train stops. On my desk, I have a work station…