Issue Description
USB devices don’t appear in Finder or Disk Utility.
Common Causes
- Insufficient power
- Faulty USB hubs
- Corrupt USB cache
Step-by-Step Solution
Step 1: Test Direct Connection
- Plug USB device directly into Mac
- Avoid hubs initially
Step 2: Check Disk Utility
- Open Disk Utility
- Look under External
Step 3: Reset USB Ports
- Restart Mac
- Try another USB port
Step 4: Update macOS
- Install latest updates for USB firmware fixes
Explore Further
- Reset SMC (Intel Macs)
Prevention & Best Practices
Use powered hubs for multiple devices.