Samsung SyncMaster XL2270HD - Manual (Page 20)

2-7 Installing the Product
2-7 Connecting an HDMI cable
Connect the HDMI OUT port of the AV device (Blu-ray/DVD/Cable/Satellite box) to the [HDMI IN] terminal of the monitor using the
HDMI cable.
Press the [SOURCE] button at the front of the monitor or on the remote control to select <HDMI> mode.
You do not need to make a separate audio connection when connecting via HDMI.