USource XGSPON ONU STICK SFP is a miniature ONU that can be inserted into the SFP port of a switch to provide XGS-PON access to conventional switches, upgrading traditional switches and modules into optical access terminals and enabling a smooth transition in network architecture. This module integrates a 10G XGS-PON ONU chip and an SFP chip, functioning as an optical modem and SFP-interfacing switch.