The Adtran SDX621i XGSPON ONT is a high-quality optical network terminal modem designed for full fibre connectivity. With a single Ethernet port and wired-Ethernet connectivity, this modem offers reliable and fast internet access. Manufactured by ADTRAN, a trusted brand in networking technology, this modem is suitable for both residential and small business use. The sleek grey design and one LAN port make it a convenient and efficient choice for those looking to upgrade their internet connection.