As far as hardware goes on the B660 Master, it’s not far off its Z690 brethren with three PCIe express slots, the top x16 operating at Gen4 and the other two operating at x4 and x1 Gen3, respectively. Storage includes one m.2 slot coming off the CPU, this lives above the top PCIe slot. We also have two more m.2 slots to the left of the chipset heat sink, one operating at Gen4 and one at Gen3. SATA connectivity includes four ports at 6Gbps.
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