Multi-Tech Systems INTELLIGENT SERIAL INTERFACE ISI9234PCIE - Manual (Page 11)

ISI Quick Start Guide
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16. The Found New Hardware – MultiTech Systems MT9234SMI-V92 screen
appears. If you have the disc that came with your device, insert it now.
The ISI Card CD is still in the CD ROM drive. Click Next.
17. Searching disc for software screen appears.
18. Windows can’t verify the publisher of this driver software screen appears.
19. Select Install this driver software anyway