Used for a central connecting point in networks, transportation, or organizations, similar to English 'hub'.
This airport functions as a hub airport in Asia.
Tokyo has become a logistics hub for Asia.
USBハブを買って、ポートを増やした。
I bought a USB hub and increased the number of ports.
The government is pushing forward plans to turn this city into a transportation hub.
This airport functions as a hub for the Asian region.
ルーター directs data between different networks, whereas ハブ simply connects multiple devices within the same local network without routing logic.
Borrowed from English 'hub'.