The manual for one of Asus's motherboards based on the B350 chipset states that a PCIe x4 M.2 drive can "share" bandwidth with drives on SATA ports 5 and 6. Gigabyte, however, says that the installation of an x4 PCIe drive precludes use of SATA ports 5 and 6. What's the truth here?
a. B350 can really support six SATA drives and an M.2 drive at the same time
b. B350 can only support four SATA drives with an M.2 drive installed
c. This depends on the motherboard and both Asus and Gigabyte might be telling the truth.
Thanks for any clarification. If Asus is mis-stating this in their manual I intend to hold their feet to the flame for falsely coercing a purchase that I otherwise would not have made