I bought it as an additional MEG B550 Unify-X board for installation in the M2_4 (PCIe 3.0 x4) slot. Pros below: Good memory for PCIe 3.0, the height of the components allows for normal cooling under the included motherboard radiators (unlike the 2 TB version). Cons below: Recording speed - based on the declared numbers, comments and reviews, I expected more.