Your Acer notebook tour - 25Rear view36124 5#IconItemDescription1Ventilation andcooling fanAllows the computer to stay cool.Do not cover or obstruct theopenings.2Ethernet (RJ-45)portConnects to an Ethernet 10/100/1000-based network.Note:Pull the lip down to open theport fully.3USB port withpower-off chargingConnects to USB devices.