If Device Manager fails, download the official driver from your computer manufacturer (Lenovo, Dell, HP, ASUS). Microsoft Learnhttps://learn.microsoft.com Realtek card reader is not working after Windows 11 upgrade
Sometimes the internal reader’s hardware fails. A $10 USB 3.0 external SD card reader bypasses the Realtek driver entirely and works instantly on Windows 11. realtek usb 2.0 card reader driver windows 11