Can i use 2 of these together, effectively giving me a 20 meter USB extension cable? Are there any negatives to doing this?

I'm not sure that would work - having a signal amplified twice (amplifying and already amplified signal). There is a 20 meter active extension:http://www.amazon.com/PTC-Meters-Extension-Repeater-Supports/dp/B0040IASMS/ref=sr_1_1?ie=UTF8&qid=1380508937&sr=8-1&keywords=20+meter+usb+extension+cableThat distance is really pushing the format though and not sure it will work. It will depend a lot on the data you are sending over it. I've found the best way to extend USB large distances is to use a USB over Cat5/6 adapter set (you use a CAT cable to run the distance):http://www.amazon.com/over-Cat5-Extension-Cable-Adapter/dp/B004XYEXX4/ref=sr_1_3?ie=UTF8&qid=1380509110&sr=8-3&keywords=usb+to+cat+5+adapterThis has worked for me up to 100 feet with no problems, but most likely not for very intensive data transfer, such as an HD camera. You can try what you have suggested, but I have not seen that done yet.Good luck!

Are you able to use more than one of these together? I need aproxamatly 60 ft.

MANUFACTURER ANSWER: Thank you for posting your question! You can connect up to three of these extension cables (or three of our 10-meter cables) together, as long as the first one is connected directly to your computer (not a hub). The only possible issue is a lack of power to the connected device. This is because each cable has hub at the end that conditions the signal after its long trip down the cable (which allows lengths greater that with an ordinary USB extension cable). That hub uses about 100mA of the 500mA of power which is the maximum that can be supplied by the computer. This problem can be solved by putting a powered USB hub at the end of the cable, then plugging your device into the hub. To reach 60 feet (17 meters), you will need to use two of our 32-foot (10-meter) cables: http://www.amazon.com/dp/B004AGX4YO . A couple of points though: these cables do not work for charging and there can be timing and synchronization problems with some video cameras. If you have any more questions, please contact us at http://support.plugable.com.DavidPlugable Support

I have a usb mouse for my security system will it wook with the 32 feet cable?

I have used them on Amcrest and KGuard. Work great on my security systems.

Will this power a Nestcam?

MANUFACTURER ANSWER: Thanks for asking! We have not tested Nest compatibility in our offices and we have no user reports, good or bad, specifically about Nest cameras. That being said, USB cameras and video devices are usually the most susceptible to performance issues when connecting USB extension cables. For best video results, we strongly suggest to use the standard length cable suggested by Nest. Hope this helps! - Plugable Technologies

10 Meter (32 Foot) USB 2.0 Active Extension Cable Type A Male to A Female - Driverless

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