QuickerTek mCard A month ago, we wrote about QuickerTek’s QCard 2, a replacement Wi-Fi card that adds 802.11ac support to a handful of recent MacBooks. Now the company is back with mCard ($149), a wireless card designed for even older machines. mCard allows access to faster 802.11ac Wi-Fi networks, as well as adding the Bluetooth 4.0 wireless standard. Depending on Apple’s software support, this might be useful for people who want to take advantage of the Continuity features of OS X Yosemite without buying all new Macs—just be aware that there’s still some ambiguity over whether Continuity will be supported for third-party wireless hardware.The compatibility list for this card is a bit scattershot. It includes 15” MacBook Pros from 2008 to 2009, Late 2009, 2010, and 2011 27” iMacs, 17” iMacs, and “2007-2008 20” Intel PowerMacs.” We’re assuming that last entry is meant to read “Intel iMacs.” You do have to install the card yourself, but if that means a few more years of useful life for your Mac, it just may be worth it. If you’re buying this in hopes of Continuity support, it may not be a bad idea to hold off until the fall, after testing has been done.