Direct inter-pc connect using USB vs network connections (using Ethernet/InfiniBand)?

I have been trying to find relevant materials on this but to no vain. When it comes to inter-connecting servers/PCs (like ini data centers), why is network solutions such as Ethernet/InfiniBand preferred over USB connections?

Any reference to relevant material where I can learn more about this would be very helpful.

Thank you so much for your time and help!

Hell Vimell,

Thank you for posting your inquiry on the Mellanox Community.

As per your question, USB is an interface for connecting peripheral devices while Ethernet/Infiniband is an interface for networking

Read more: Difference Between USB and Ethernet | Difference Between http://www.differencebetween.net/technology/hardware-technology/difference-between-usb-and-ethernet/#ixzz6KvBvyITe

Thank you,

~Mellanox Technical Support