I think what you need is a USB to RJ45 adapter for your laptop, and then a regular RJ45 patch cable.

Arduino enthusiasts looking for a project to keep them busy this weekend maybe interested in a new project featured on the official Arduino blog for a handy cable tester. Equipped with a touchscreen ...

Found some of the other threads about monitor review sites - the ones I checked, don't seem to have a lot of content. Understandably, an RJ45 jack is rather niche... to the point it's def not ...