Copyright (c) 2026 MindMesh Academy. All rights reserved. This content is proprietary and may not be reproduced or distributed without permission.
6.2.3. Hardware Issues
PoE (Power over Ethernet) Issues:
- Budget exceeded: Total device power needs exceed switch PoE capacity
- Standard mismatch: Device expects PoE+ (30W), switch provides PoE (15.4W)
Transceiver Issues:
- Mismatch: Different speeds, wavelengths, or fiber types
- Low light levels: Check with optical power meter
- Dirty connectors: Clean fiber end faces
Enroll to unlock the 4 practice questions written for this section, so you can test what you just read while it is fresh.
Enroll to unlock the 5 flashcards for this section and review them on a spaced-repetition schedule.
Written byAlvin Varughese
Founder•18 professional certifications