Tech Source GFX 400 Series - Manual (Page 52)

GFX 400 Series Installation & Reference Manual
B-6
Make sure all connectors are firmly in place.
Figure B.2
NOTE: Monitors are numbered consecutively based on which
connector each is attached to (Refer to Figure B.3). Numbering
starts with the primary display – the one that first displays
information when you restart your computer. If another graphic
card is installed in your computer, display numbering may be
different.
Figure B.3