I'm willing to buy TP-LINK TL-WN821N but i'm afraid that it won't support BSNL EVDO. Help needed ASAP.
what do you mean?if you mean will it support EVDO sim then obviously not but if you mean you can can use it to share net connection by a usb EVDO modem in another usb port then yes with some software & configuration.
TL-WN821N - Welcome to TP-LINK
Actually I use BSNL EVDO on Micromax MMX 300C on my desktop and I want to share hte connection over Wi-Fi through WN821N, is it possible?
try this:
how to share 3g dongle network over wi-fi - Laptops - Wireless Networking
connectify paid version(not free version) can do this also but try above as it is completely free based on windows 7/8 inbuilt commands.