My go to place for cables and connectors: www.monoprice.comduckie
Have you tried a google search? Does the below have what you are looking for?https://www.google.com/search?hl=en&as_q=RJ45-10+cable&as_epq=&as_oq=&as_eq=&as_nlo=&as_nhi=&lr=&cr=&as_qdr=all&as_sitesearch=&as_occt=any&safe=off&tbs=&as_filetype=&as_rights=
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via Egeo 16