BIOS, CMOS, UEFI – What’s the difference? This video explains the difference between the BIOS, CMOS, and UEFI. It also explains what the purpose of the CMOS battery. What is the BIOS? What is UEFI? What is CMOS? #BIOS #UEFI #CMOS previousM.2 NVMe SSD Explained – M.2 vs SSDnextWiFi Range Extender – WiFi Booster explained – Which is the best?