@mightynoobSimple answer is no. Optus had an Optus One plan that should work, but it's not available anymore. Optus have a check somewhere in theirs system for the existing home internet SIM plans that block the use of the SIM in non Optus branded modems. There are people who have got the SIM working in some third party modems, but other have failed to get it to work.
There may be some plan somewhere that is available from an optus MVNO. To see if there are any head on over to whirlpool forums and see if you can find anyone who has used the MR600 with Optus.
I'm afraid TP-Link Archer MR600 V2 is not an Approved Optus 4G Home Internet modem. You can find the list of Approved Optus 4G Home Internet modems on this guide 'Modem equipment, set up & user guides for Fixed Broadband'. Tina.
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