I had an order in with MCM electronics for a BBB that was on backorder. They called this morning about my order and said that they will be shipping the C version and asked if I wanted the upgrade. I accepted the upgrade and it is now on back order and will be shipped next week. The new price is $52.95. The C version has 4G vs 2G eMMC and everything else is the same. It should work the same as the B version. 73 Doug WA3DSP http://www.crompton.com/hamradio