Use Wireshark to snif other computers on the same wifi network

[Aaron Schneider <notstop () live com>]

I'm connected to a network with WPA-CCMP-PSK, and running Kali on a computer with Intel Centrino Advanced-N 6200 AGN 
wifi card. I open Wireshark in promiscuous mode, however I can only view the packages received or sent from me. For the 
other computers, I can only see few packets, like NBNS, MDNS, WOL, but can't see any TCP, HTTP or any other. I think 
the issue is with the network card, that doesn't support promiscuous mode, but I don't know if there is a command or 
something to know that for sure, without having to buy a different card.

Can somebody help me on this?                                     
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