>I have an Insignia Ethernet Adapter to provide a direct Ethernet connection to my laptop. This has been installed last week. It was necessary as the wireless router at a specific location is not working very well. So, we plugged that directly into the laptop.
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>It loses connection every 4 hours or so. So, I have to remove it and put it back again. Is there a setting for that or this is a defect equipment?
Some stupid questions:

Have you tried to disable the wireless adaptor in the laptop to make sure it's not a factor?

Have you checked to make sure everything on the wired connection is OK (e.g. cabling, switch, make sure cables are seated properly, change to different connection on switch, etc)?