ARRIS DCX3300 User Guide - Manual (Page 14)

Operation
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DCX3300 High-Definition Dual Tuner / External DVR Set-top • User Guide
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Video Format Indicators (Front Panel Display)
The front panel display of the DCX3300 set-top is equipped with indicators to the right
hand side of the display that are used to indicate the currently-selected video output
format on the component video (YPbPr) and HDMI outputs.
M-Card™ (DCX3300-M only)
The M-Card is required to view cable television programs, previously recorded programs
on the DVR, or interactive on-demand programs. The M-Card should not be removed.