First restart the Bluetooth service and restart the keyboard to confirm that the device can be discovered; then force re-pairing through a wired connection; then delete the old pairing record in the system settings and search for the connection again; finally check macOS updates to ensure that the system is compatible with the keyboard.

First check whether the physical connection between the USB flash drive and the Mac is normal, try changing the port or removing the adapter; if the connection is correct, enter the access preferences and ensure that the "External Disk" is displayed in the desktop and sidebar; if it is still not recognized, open the Disk Tool to see if the USB flash drive is detected by the system. If it is displayed, click Mount. If it is prompted to be damaged, you can run first aid repair; if the file system is incompatible (such as NTFS), you can format the USB flash drive to exFAT or MS-DOS (FAT) format in Disk Tool (note that this operation will clear the data); if the above method is invalid, run the diskutillist command to find the USB flash drive device identifier through the terminal, and then use the diskutilmount command to manually mount it.

The most direct way is to recall the storage location, usually in folders such as desktop, documents, downloads, etc.; if it cannot be found, you can use the system search function. File "missing" is mostly due to problems such as unattention of the saving path, name memory deviation, file hiding or cloud synchronization. Efficient management suggestions: Classify by project, time, and type, make good use of quick access, clean and archive regularly, and standardize naming. Windows search and search through File Explorer and taskbar, while macOS relies on finder and Spotlight, which is smarter and more efficient. Mastering tools and developing good habits is the key.

First check whether the monitor connection cable is loose or damaged to ensure that the physical connection is normal; then update the macOS system to fix the display vulnerability; then reset the NVRAM/PRAM to clear the error settings; then adjust the monitor refresh rate to the recommended value; finally start to troubleshoot third-party software conflicts through safe mode.

Turn off Yahoo search history saving function first to protect privacy. Turn off search history through account privacy settings, then disable history tracking in search settings, then clear existing history and block future records, and finally use browser privacy mode to search without trace.

The USB-C interface does not necessarily support the Lightning protocol because it is only a physical interface, and the Lightning protocol requires special chips and circuits; whether it supports it depends on the manufacturer's design and can be confirmed through the logo, specifications or system tools.

1. You can disable pictures through Google Chrome to improve loading speed, go to Settings → Privacy and Security → Website Settings → Pictures → Select "Don't Show Pictures"; 2. You can also install extensions such as "BlockImage" to achieve flexible control; 3. You can also select "Offline" or "Low-endmobile" mode to test the image-free browsing effect through the network condition simulation function of the developer tool.

IfyourmacOSupdateisstuckorfails,trythesesteps:1.Checkinternetconnection.2.Freeupdiskspace.3.RestartyourMac.4.UseSafeMode.5.ResetNVRAM/SMC.6.InstallviaRecoveryMode.7.Deleteoldupdatefiles.8.ClearupdatecachewithTerminal.