When doing backup to a portable HDD connected to router USB3 using ToDo backup, my maximum transfer speed over Ethernet with RJ-45 Cat 6 20 meter cable on 1Gb connection is maximum 420Mbs. When copying large file (10Gb) from PC (i9-9900K CPU with 64Gb memory and Samsung 1Tb M.2 NVMe 970 EVO...
