I have a BSNL DataOne connection,
And My Router (MT841) stopped working after serving me for nearly 5+ years

And now i am in search of a new router.
Following are the features i am looking for
1. 4 LAN ports (1Gbps preffered)
2. ADSL port
3. Wifi N+ Support (NO DRAFT N, complete support required)
4. USB for connecting either printer or USB storage

i have tried going through various web site of manufacturers but i have not be able to get specification for ADSL router. most websites say there is WAN port which seems to be a RJ45 and not a RJ11 as required for ADSL.

I am also considering whether to go for two devices,
1. ADSL Modem
2. Wifi Router

can anyone shed light what are reliable options available ?
i plan to get the device/s from US in 3 weeks.
any inputs in this regards will be welcome.