What is the Ethernet speed of this adapter? John July 06, 2018 08:57 Updated Follow This adapter is capable of 10/100/1000 Gigabit Ethernet speeds. Related articles Fixing Ethernet Issues Can this adapter be plugged into a printer to connect to a network? Quick Guide Will Clamp Hub Pro work with late 2015 iMac 5K Retina Display? Quick Guide Comments 0 comments Please sign in to leave a comment.