IOGear GPSU21 - Manual (Page 12)

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Changing the network settings of the print 4.
server to a fixed IP address is not necessary
but will provide more performance stability,
especially in the event of a power outage. It
can also be useful if you are setting up IPP
(Internet Printing Protocol) to print over the
Internet. Click
Next and skip to step 9 if
you do not need to specify an IP address.
Otherwise, select the option to change set-
tings (no password is needed by default) and
then click
Next.