Instruction: Answer the given question using the supporting document.

Input:
Question: Will the 3.0 ports on this hub power external drives? Previous experience had a problem with this.
Document: I've had the 9-port version of this hub for two months now. I use it only with USB 3.0 external hard drives that each have their own 3-amp switched power supplies, so this hub is not really powering anything. This hub will not work unless it is also plugged into power. It is the only one of  my 5 USB-3 hubs that requires power in this configuration.The main problem is this thing gets extremely hot and shuts down once in a while.
Upsized from the Anker 7-port hub (ASIN B006TT91TW). This 9-port unit has a higher current power supply (5A vs. 3A) and the two extra ports. Just turn the Surface on, wait for the lock screen, flip on the hub and everything works perfectly - keyboard, mouse, Passport drives, SSD external drive, UPS, D/A sound converter, monitor hub - WOW! And all USB 3.0.
If there is a degradation with this hub it is negligible and the connection has stayed rock solid with all external drives. I am running four external drives in USB 3.0 hard drive docks with their own power cables. Having nine USB 3.0 ports leaves lots of room to expand. I also like the dedicated charger port as it works fine with my iPad Mini for charging without activating a connection to the desktop and the resulting engaging of iTunes.
This 10 port hub is also externally powered. Because it has added power, I am able to run my external DVD player again. It offered the perfect solution to my problem, and offered an always needed boost to my laptop!Very nice design, sturdy, and best of all 3.0, meaning everything transfers fast.Obviously, the external plug is both a positive and a negative - another cord to plug in ... but it makes a very nice, neat solution to my cluttered desk.
Finally a usb 3 hub with more then 4 ports! This is very useful considering there are a limited number of them on a laptop. I recently bought a sager gaming laptop and found that 4 onboard usb ports wasn't enough to power all my external devices. This hub takes care of that problem nicely. No more switching from one device to another, now I can plug them all in and power them on when I need them.
I have only an external drive connected to it and no matter what port (I have the nine ports model)I plug the USB cable in the light keeps flashing and my computer does not see the drive.Windows continues to show an error claiming a power surge on the USB port where the hub is connected.So far not a good experience.Update.First of all my apology to the manufacture and the customers that read my feedback.
I was having problems with other usb hubs, where my external hard drives were force ejecting (not good). After this happened a couple of times, I realized I didn't have enough power in my usb hubs. This higher powered Anker hub has solved this problem. So far so good.
I was running an older hub (USB 2.0) with two external harddrives on it and it would routinely alert me that I had improperly disconnected the drives without unmounting them. Since upgrading to this hub I haven't had that problem once. I'm also finding the extra high-capacity charging port useful for my tablets.
If you're looking for a Great USB 3.0 hub today--- just buy this one. I've tried 4 different Hubs and MOST of the Hubs that are selling have some 'fine' print (or they may not even tell you about possible issues: 1) A lot of hubs wont run an external portable USB drive, they work on 'powered' drives, but can't power the portables. 2) A lot of them will not run things like External Sound cards, audio, etc.
After recently purchasing a Lenovo Twist with 2 USB 3 ports, I discovered a problem - well, not that I didn't have enough USB ports - we never do, but that the two ports that were included were on opposite sides of my computer - meaning my external DVD player wouldn't always power itself, since it was supposed to plug into two ports.
Answer: Do the external drives to be connected to the hub have their own power source? If they are intended to run off of the power of the hub, you may have problems. This is my speculation based on the note under the product description stating the product should not be used with WD passport hard drives. I have several of those, each 1TB, and they run off the power of the hub. Currently, they are plugged into USB 2.0 ports, but they are USB 3.0 compatible products used as "backwards compatible," and run very slowly with USB 2.0, but they run. With USB 3.0, there is evidently a reason they are not supposed to be used.  So, I would say it depends on whether the external hard drives have their own power source and, specifically, if they are WD passport drives, the product information I saw said they should not be used with this hub.