not sure about foxconn in particular but most board automatically switch to dual channel if you've got the memory in the right places. (you'll have to check your manual for that) usually if you have four banks to run in dual channel you put them in banks 1 and 3. It should also tell you on the POST screen if the memory is in dual channel mode or not. If you can't see the post screen then go into the bios and turn off the boot screen logo
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