Edimax Technology Edimax PS-3103P - Manual (Page 114)

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8.10 Configuring SMB
All PC should join the same group before they can use
this print server by SMB protocol.
SMB Group Name, the name of SMB group that this print
server belongs to.
Save to Print Server, save the configuration to the print
server.
Make sure to reset the print server (described in section
8.13) to have the changes take effect.