[quote=“ajayb007, post:1, topic:155957, full:true”]
I connected the My Cloud via ethernet cable to my computer and the My Book via an ethernet USB adapter, but I am getting a “not found” error when I do that.[/quote]
If one connects the My Cloud direct to their computer via an Ethernet cable they need to ensure both the My Cloud and the computer’s networking port are both using an IP address in the same subnet (example 192.168.1.x). Often when one doesn’t set a static IP the device (My Cloud and or local networking port) will typically default to an IP address in the 169.254.7.x subnet range.
Slow copying from a My Cloud to a USB device connected to the My Cloud is a known issue. One can search this subforum for those other threads. The main cause is that when initiating the copy from a computer the data may flow from the My Cloud, through the computer, back to the My Cloud, then to the USB drive. It gets even slower if one is performing the file move with a WiFi connected computer.
As the previous person pointed out the better way, when the USB hard drive is connected to the My Cloud, is to log in to the My Cloud using SSH and initiate the copy (using Rsync for example). Or use the WD My Cloud Desktop software for Windows/Mac, or the WD mobile apps for iOS/Android to move/copy files between the My Cloud and attached USB hard drive.