BELKIN RJ45 Inline Coupler

Comment:
Great cost compared to other people identified elsewhere. Does the job perfect and doesn't seem to cause packet loss. It is not Cat5e certified. Can nonetheless be utilised in a networking environment, but I wouldn't use it as a permanent solution. It serves me properly when I require to extend a cable to a different laptop or computer for repair or updates.

Comment:
These points do the trick even with 100Mbit Ethernet. I had tried some couplers from Radio Shack that didn't work at all. not technically CAT5e compliant, according to the packaging