A capital B indicates "byte", and a lower-case b indicates "bit". 240 MBps is eight times faster than 240 Mbps.

When it comes to speeds in bits per second, M almost always means 1000000, and not 1048576.

Networking speeds are pretty much universally represented in bits (per second) -- "little b". Storage, on the other hand, uses bytes -- "big B".

So, yeah...

> I have 240MB/s at home ...

You're saying you have a 240 MBytes x 8 -- or 1920 Mbit/s -- connection.