HP USB Dual Output USB Graphics Adapter - Manual (Page 17)

4. To change the refresh rate, click the Advanced button and then click the Monitor tab.
5. Select a refresh rate from the Screen refresh rate drop-down list and then click Apply.
6. Click OK to close the settings screen.
Using Multiple Adapters
Up to three adapters can be simultaneously attached to one computer. To use multiple adapters:
1. Install the driver as described in Installing the Adapter and Driver on page 5 and connect the first
adapter to your computer.
2. Then connect the second adapter to your computer. The system will automatically complete the
installation.
When multiple adapters are connected to a computer, each can be used in either extend or mirror
mode.
You can connect up to six add-on monitors to one computer using a powered USB hub and three HP
Dual Output USB Graphics Adapters as shown in the following diagram.
NOTE: An additional HP Dual Output USB Graphics Adapter is required for each additional pair of
monitors.
Using Multiple Adapters 11