GEEZ! That fan is one of the old Minebea-Matsushida Motor Corporation fans better known in the USA as Panasonic Panaflo fans. It is no longer in production. We used to install them back in the early days of personal computers when cpu's did not have heatsinks and the only fan inside a case was the one in the power supply. They were high rpm, high airflow, and very loud. Back then we didn't care about noise. We ran them at full speed. We just wanted to keep things cool. All of them sounded like jet fighters breaking the sound barrier.
Your particular fan with four cables is a pwm fan made for Dell computers. The speed can be controlled by the pc system providing your motherboard has a 4 pin fan connector. If you connect just the power and ground cables it will only run at full speed. If you connect it direct to a power supply it will only run at full speed.
The 4 cables are +12 volt power (red), ground (black), signal/sensor (?), and control (?)
I am growing old disgracefully and I forget things. I can't remember which remaining cable is for the signal sensor and which cable is for the control.