I purchased a 1m and 2m RJ45 curly cord for my Synscan handcontroller from
www.curlycords.com.au
They are quality cords,locally made but a bit pricey ( I was happy to pay the money for quality and reliability
I been using them for 9 months without an issue
They do custom cords as well ( power, data, audio etc.. )
Cheers