HiRO H50194 - Manual (Page 9)

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Step 3:
For Security reasons VISTA requires the installer program to have administrator
privileges so the new policy called " User Account Control " has been
introduced in Windows VISTA. If UAC is enabled Windows pops up a window "
User Account Control " Windows need your permission to continue. User needs
to Click " Allow " to proceed with the installation.
Step 4:
Click " Next ".