AAEON EMB-BT1 - Manual (Page 21)

2-13 Chapter 2: Motherboard information
5. HDMI port. This port is for a High-Definition Multimedia Interface (HDMI)
connector, and is HDCP compliant allowing playback of HD DVD, Blu-ray,
and other protected content.
6. Serial port (COM2). This port connects a modem, or other devices that
conform with serial specification. This serial port also supports RS-232
(COM2 is optional).
7. Line Out port (lime). This port connects to a headphone or a speaker.
8. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor
or other VGA-compatible devices.
NOTE: Disable LVDS support when using only the VGA port. Refer to the
section on System Agent (SA) Configuration in Chapter 3 for details.