3DLABS Oxygen 402 - Manual (Page 68)

62 Dynamic Pictures Oxygen 3D Family
NOTE : Some computers may not support the Oxygen card when the
jumper is moved and the VGA subsystem is disabled, as some
computers do not support the simultaneous use of more than one
video card.
To switch your VGA jumper: To switch your VGA jumper:
1. Ground yourself to the system chassis using the anti-static wrist
strap. It is now safe to remove your Oxygen card from the
protective bag. Always handle the card by the edges.
2. Carefully slide the VGA jumper (blue or black in color) up and off
the two metal prongs on which it rests. This breaks the connection
between the “VGA” prong and the center prong.
Figure 25: VGA Jumper (VGA Enabled)