MAC OS setting on Broadband Router
Open Finder
 
Click Install MAC OS X HDD
 
Click Applications
 
Click Utilities
 
Click Print Center
 
After open Print Center, Click "add a print"
 
Please refer to below 1-5 step.
1. Choose "using IP's LPR print"
2. IP address insert "192.168.0.1"(DI-724P+ default IP address), Please using DI-724P+ LAN Port IP address
3. "Don't choose" using default Queue on server
4. Queue name is "lp" (Must be small letters!)
5. Choose your printer server model
And click "add" to finish the setting
Then you can try to print your file through DI-724P+ on MAC OS.

Please forgive us that we don't have English version of MAC OS to do the test.