Acer Aspire 4750 Quick Start Guide - Page 11

9 Right view English 12 # Icon 1 Item Microphone jack 3 456 7 Description Accepts inputs from external microphones. Headphones/speaker jack Connects to audio devices (e.g., speakers, headphones). Note: Supports compatible 3.5 mm headsets with built-in microphone (e.g. Acer smart handheld headsets). 2 USB 2.0 / 3.0* port Connects to USB devices. * A USB 3.0 port can be distinguished by its blue connector (for certain models only). * Supports the USB 3.0 (SuperSpeed USB) specification; Devices without USB 3.0 certification may not be compatible. 3 Optical drive Internal optical drive; accepts CDs or DVDs. 4 Optical disk access Lights up when the optical drive is active. indicator 5 Optical drive eject Ejects the optical disk from the drive. button 6 Emergency eject hole Ejects the optical drive tray when the computer is turned off. Note: Insert a paper clip to the emergency eject hole to eject the optical drive tray when the computer is off. 7 Kensington lock slot Connects to a Kensington-compatible computer security lock. Note: Wrap the computer security lock cable around an immovable object such as a table or handle of a locked drawer. Insert the lock into the notch and turn the key to secure the lock. Some keyless models are also available.