Is SONOFF ZB Dongle-E Zigbee 3.0 Dongle USB an independent hub bridge

Dear All, I am very new in home automation.
Is SONOFF ZB Dongle-E Zigbee 3.0 USB already a ready-made solution as an independent hub/bridge in the sonoff/ewelink ecosystem, so I do not need any bridge ? Or I need it ? If yes, which model?
tnx