RJ45 Port Switch vs SFP Port Switch

RJ45 slot and conducts through copper how is that different from a standard EthernetRJ45 connection? What really differentiates SFP from

EC Series 1-1546405-1 TE Internal Number: 1-1546405-1 Circular RJ45 Single Port Receptacle No Cat 5e 8 8 Low Printed Circuit Board A

slot machine mini CARE CASE® RJ45 Ethernet Splitter, RJ45 Splitter Adapter 1 to 2 Dual Female Port Slot Compatible with MacBook AirPro M1,Chromecast,Switch · 3 out

slot booking for polycet 2023 The Smart Keeper RJ45 Port Lock physically blocks access to any unused RJ45 ports Buy online $30