I'm still a bit lost with M.2 "tech". Could someone explain me a few things about M.2: - PCI-e mode vs. SATA mode, what's the difference? SATA mode uses SATA lanes, does it have worse bandwidth and/or latency than PCI-e mode? - Comparing M.2 NVMe SSD to "pure" PCI-e NVMe SSD, which one has lower latency? My guess would be PCI-e. Thanks in advance!