Hardware Front Panel Front Panel 1 SD Card light On: An SD Card or MMC is being accessed. 2 SD (Secure Digital) Card slot Supports SD Cards and MMCs (multimedia cards). 3 Microphone jack Connects an optional monaural or stereo microphone. 4 Audio-out jack Connects optional headphones or powered stereo speakers. Also connects the audio function of an audio/video device such as a television or VCR. 5 Wireless device button (available on select models) Turns an optional internal wireless device on or off. 2–8 Startup and Reference Guide—Part 2