SATA HD connection won't show up on my iMac
I'm trying to transfer information from my old Apple 21.5 2013(late) imac to my new SSD HD via SATA to SSD HD (Sabrent) but it doesn't show up on the screen when connected. The light on the SATA unit goes on, but its not showing up. What am I doing wrong?
[Re-Titled by Moderator]
iMac 21.5″, macOS 10.15