The Calix GigaSpire Mesh Blast U4m GM1028 is a mesh wifi extender featuring dual-band technology and a single Ethernet LAN port. Works with Calix u4, u6 and u12 routers, and connects via wifi or ethernet. Designed by Calix, this model provides reliable networking for home and small office settings. With its mesh technology, it offers seamless coverage and high-speed internet connectivity for multiple devices. Ideal for users looking for a reliable and efficient router with basic Ethernet connectivity options.