Thank you very much. Another question, what else hardware would i need to connect all the miners in serie. Like what is all the hardware that i would need? A computer to run the mining software, another special hardware to connect all the miners to work together? USB hubs or what other kind of hardware?
No need for computer for running the S3 per se, the S3 is self sufficient, its controller is included, you just type its IP in your web browser on a networked computer to connect to its open-wrt software and input the settings you want. Then the mining will happen by the miner's controller.
Miners don't "work together", they all individually point to a pool and the work is pooled there.
It is not a USB device, so no, nothing of the sort.
You will need PSU's for 50 S3, so quite a lot of them. Ethernet switch, you will need 50 ports, unless you try to setup wifi on them. And 50 ethernet cable. A router to plug all the switches in. A couple of 10-12 port switches would probably be cheaper than one big one.
And earplugs.