Instruction: Answer the given question using the supporting document.

Input:
Question: The Plugable web site states that it can charge with Host Off.  Does that mean that this can act as a standalone USB charger without computer?
Document: Some phones it apparently won't charge. Samsung Note2 works fine. It's a nice little hub but if you are upgrading an older computer without USB 3 you will need to add something like StarTech.com 4-Port PCI Express SuperSpeed USB 3.0 Controller Card Adapter. to take advantage of the USB3.
The hardest thing I had to do was tape the prepaid label on the return package!This hub was cheap enough to not break the bank and it is a great addition to my tangled web of usb items I have plugged in to my computer. My computer recognized the hub right away and automatically installed the software without a hiccup (Windows 7 Professional).
I have this plugged into a unit on the floor and it works great. I don't have to reach below the desk to swap out USB devices or storage anymore. Four ports on the desk makes it very easy to charge phones, swap USB thumb drives and, charge my Kindle. All good. I have purchased a few plugable brand devices and had good luck with all of them.
This Superspeed USB 3.0 hub has only four ports, but that may be just fine for many users. Installed without a problem. Transfer rates were as expected with devices plugged into the ports; that is, they performed about the same as when plugged directly into a PC USB port.When my computer (Win 7, 64 bit) was rebooted or brought out of sleep mode, this hub had no problems seeing whatever was plugged into it. This can sometimes be a problems with USB hubs.
But not my iPad. My iPad syncs just find via this hub, but the hub doesn't put out enough power to charge it. Oh well, no biggie.One more thing. A few of the other reviews say that the included USB 3.0 cable is very short. Mine is plenty long. If by chance you get a short one, contact Plugable customer service and they will send you a longer one straightaway. Plugable has very responsive customer service.
the bigger one has lights and a separate transformer so that just a small plug goes into the socket instead of a bulky one. works better than non powered usb hubs, but not with everything. they both will let me use my android without problem, but it seems like it would take forever to charge. also, my logitech keyboard doesn't work well with any usb hub. for now, i fill the extra spaces on my 7 port hub with microsd cards.
Bought this to connect multiple hard drives, or charge multiple devices. It works great. I like the fact that it is powered by the wall so I don't draw a lot of power through my computer port instead.
Bought this to replace an older USB 3 hub that was intermittently disconnecting, and had already been returned once. This unit feels much sturdier, though I did not note that it requires a USB 3 B male plug on the hub end. The hub ships with the needed cable, but I needed to obtain a longer one. Got that, and then tried to upgrade the firmware, but the Plugable software (downloadable from their site) couldn't find the hub.
It works, however it was slower, by 4x, than expected (only marginally faster than USB-2). I now use a direct connection from computer to my LACIE (usb-3) backup drive.On 3/9/13 I modify the above comments:I first tried using my Plugable USB-3 hub-from Amazon, transferring 36GB mixed data(including 2 full backups plus photos, etc, etc. ), via usb-3 cable-it took a long time.
This Plugable hub worked fine for 4 months and then died for no apparent reason. It went bad in a way that actually kept my computer from booting, too. Once I disconnected it, the computer could boot with no problems, but the hub no longer works at all.
Answer: MANUFACTURER ANSWER:  No, many devices will not charge with host off. USB charging behavior is nonstandardized and device dependent -- some devices look for "their charger" via special signals that are not consistent from device to device.  Some devices try to charge in all cases.  There's no way to know without looking up your particular devices (e.g. 1st gen iPad has different behavior from 4th gen iPad, etc.). For all the details and test results we have for this particular model, see the charging FAQ at http://plugable.com/products/usb3-hub81x4#faq  Thanks for asking!