Does my Macbook Pro support 5 GHz Wi-Fi? I have MacBook Pro (Retina, 15-inch, Early 2013). Does it support 5 GHz Wi-Fi? 

I found the following details about Wi-Fi module there:

Broadcom BCM43xx 1.0 
802.11 a/b/g/n


If 5 GHz are supported, then will it work with 2.4 GHz in parallel?
Yes, your MacBook Pro supports 2.4 GHz &amp; 5 GHz but not simultaneously. All Macs manufactured since 2007 with integrated Wi-fi support 802.11 a/b/g/n and and some 2006 Macs support 802.11 a/b/g.

Only AirPort Base Station and Time Capsules released in March 2009 or later can operate simultaneously over both bands.

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