I needed an additional MEG B550 Unify-X board to install in the M2_4 (PCIe 3.0 x4) slot, so I went ahead and purchased one. Some pros: Good memory for PCIe 3.0; the height of the components enables normal cooling to occur under the radiators that come bundled with the motherboard, in contrast to the 2 TB version of this product. Some cons: Recording speed: judging on the numbers that were revealed, as well as comments and reviews, I was anticipating a higher rate.