Ledger USB Connection Failed — Full Troubleshooting

Triage order: 1) swap the cable (confirm data-capable, not charge-only); 2) try another USB port, ideally directly on the motherboard; 3) try another computer; 4) confirm system requirements; 5) update Ledger Live.

Safety reminder: Never share your recovery phrase, PIN, or verification codes with anyone. Always verify using the device screen. Use only official channels to download apps and install updates.