HP C240 - Manual (Page 156)

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Changing Your Workstation’s Hardware Configuration
Installing an EISA, PCI, or GSC Option Board
Graphics Paths
graphics(0) is the built-in 8-plane graphics adapter (C160/C180 only).
graphics(1) through graphics(4) are graphics adapters installed in option
slots 1 through 4.
When a dual display graphics adapter (an adapter which has two video out-
put connectors) is installed, the video connector on the left (when looking at
the system from the rear) is graphics(NA) and the video connector on the
right is graphics(NB), where N is the slot number in which the graphics
adapter is installed. A and B denote the two video output connectors on the
dual display adapter.
For example, a Dual Visualize Enhanced Graphics Card (A4451A) installed
in option slot 3 would be graphics(3A) and graphics(3B).