Connecting RJ11 device to RJ45 port on laptop

What is an RJ45 connector? rj45 slot RJ45 Port Blocker stranded slot 2 Port RJ45 Modular Connectors Ethernet Connectors are available at Mouser Electronics Mouser offers inventory, pricing, & datasheets for 2 Port RJ45 Modular

situs slot pagcor SFP port requires two SFP electrical modules and one Cat5eCat6Cat7 cable or two SFP optical modules with optical ports and fiber jumpers, while RJ45 port only