The ethernet cables we provide with your Winston have been rigorously tested for speed and fit.
You can certainly use your own cables, but we encourage you to use an ethernet cable that can handle Gigabit speeds (CAT6 or CAT5e), and ensure it clicks solidly into the back of Winston. Some cables don't, and we'd hate for you to struggle with your setup because of it. We do not offer a way to order longer cables at this time.
Winston uses a 12V 2 AMP DC power supply with 2.1mm barrel plug. The power adapter meets Winston's specific power requirements, and using an alternative power supply can cause overheating, rebooting, and/or permanent damage to Winston. Using an alternative power supply is NOT recommended, and can void your warranty.