A USB 2.0 hub connects a single upstream port (to the host) with up to 7 downstream ports (to devices) in a star topology. Transaction Translators (TT) allow Hi-Speed and Full-Speed devices to coexist on the same hub.
| Pin | Name | Function | Type |
|---|---|---|---|
| UP | Upstream Port | Connection to USB host or upstream hub | BUS |
| DN1 | Downstream Port 1 | Connection to USB device 1 | BUS |
| DN2 | Downstream Port 2 | Connection to USB device 2 | BUS |
| DN3 | Downstream Port 3 | Connection to USB device 3 | BUS |
| DN4 | Downstream Port 4 | Connection to USB device 4 | BUS |
| VBUS | VBUS | 5V power distributed to ports | PWR |
| GND | GND | Ground | GND |
A USB 2.0 hub connects a single upstream port (to the host) with up to 7 downstream ports (to devices) in a star topology. Transaction Translators (TT) allow Hi-Speed and Full-Speed devices to coexist on the same hub.