Instruction: Generate an answer to the question by utilizing the information contained in the document.

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Question: How long is the USB cable ?
Document: Bought this for my Dell Venue 8, but doesn't get enough power from the PC. Used a split cable I had for a USB hub; plugged y-cable into pc, other end into adapter and external power to get it to work. Tried on laptop and worked like it was suppose to [without external power].
I use a Roku box to stream private channels, netflix, etc to my TV's because it allowed me to cancel my cable service and save the money every month.
Had old laptop and the screen went out. I needed something that would have a capability to output to an HDMI cable. This worked great and much cheaper than a new laptop/screen.
It came with an HDMI to DVI converter to add a second monitor to an existing desktop or laptop but I didn't buy it for that purpose. Cancelling cable saved me a boat load of money and this adapter is allowing me to get several more years from my older HDTV while I save my money to buy an updated HDTV and this vendor has it for a great price to boot. For what this adapter can do it is well worth the cost!!
I have recently cancelled my cable TV subscription and started using an antenna for local OTA HD and wanted to try streaming TV shows and movies from the internet. This is the main reason I purchased this adapter; to use it with my old XP laptop to hook-up to an older HDTV that wasn't internet ready so I could stream Netflix and Hulu. It was simple to hook-up. I had it hooked-up in less than ten minutes from the time I had it out of the box.
Great product. Works with Dell Venue 8 pro. Better connect it through a powered USB hub but it works without one too.
That being said since the MacBook only has 2 USB ports if you get a hub be sure to get one with its own power supply as they won't work with my USB splitters that aren't powered by an ac adaptor. But if your like me and use all the awesome Bluetooth wireless goodies Mac has then you don't tent to care :)For the price being as low as it is compared to the others listed it really is an amazing product!
As Asus_T100 only has one HDMI output, I use a 5 yeas old "IOGEAR USB to VGA Adapter" to connect to my second monitor.I bought this Adapter for the third monitor. The third monitor works by just connect this Adapter between PC and Monitor.BTW: I periodically check displylink.com to see if there is any new driver.
This works great with my 2011 Macbook Pro 13". Just plugged it into a quality USB hub and piped it off using an HDMI/DVI adapter to my second monitor. Yes, when you drag windows from one monitor to the next, it is a little choppy, and there some small flashes during moving video from time to time, but the company has been putting out driver updates since I bought it. It works seamlessly with my Macbook.
Unfortunately it stops working after I reboot my dell venue. I simply reboot without unplugging anything, and it just stops detecting the monitor. I have it on an unpowered USB hub along with a wireless mouse/kbd adapter and an external hard drive. Anyway the driver is fine, I did reinstall, reboot, unplug replug, but no help. It could be power fluctuations on the USB port the cause.
Answer: I ordered mine awhile ago so they might of changed the specs, the mini usb cable is about 5~ feet