- Expansion PoE module for IE-3-4TC, IE-3-8TC, IE-3-4TC-E, and IE-3-8TC-E switches, support 4 ports 1/1 PoE/PoE+. External power source is required (44-57 VDC for PoE/5-57 VDC for PoE+) - Minimum IOS release 15.(2)EY2