Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Does it work with Windows 7?
Document: they seemed to work fine the first day or two but then simply wasn't recognized by my laptop running Windows 7 pro. I have no idea why because i didn't do anything different. I tried rebooting several times and replugging the hub in, but it was very inconsistent whether my laptop would recognize the hub. I ended up getting a different brand hub and it's worked flawlessly, so there was nothing wrong with the laptop. I can't recommend it.
no problems whatsoever using windows 7, 64-bit with various peripherals. the most versatile multi-tasking :) hub i could find.
I bought this hub about a month ago. I connect it to a laptop running windows 7. Devices connected to the BASE behave fine (I have a printer connected), and they get re-connected when the laptop comes out of hybernate for example. However the silver 4-port portion is very unstable. As other reviewers have discovered, it works for mice and keyboards (but in my experience waking from hybernate does not re-detect the mouse).
This USB hub is a pretty good one. Having the 7 available ports in such a compact space is great. It also being self powered is a nice feature. Like most plug-and-play items, windows able to quickly install the driver and go from there.The only reason it didn't get all 5 stars is that after one plug-in/separation of the top part, the little plastic clip that in theory solidifies the joining of the two broke.
So if you are a windows user like me, you've been scouring the internet to try to figure out why this won't work and where to get a driver for the device. I didn't find a driver, but I found the solution in the reviews on this page.
I own 3 of these and they work great. I have one hooked to my Imac which saves me from having to reach around the back of the monitor to plug and plug USB Flash Drives. Highly recommend this hub to Imac users. I also have 2 on windows pcs. The hub has a handy tray to store your extra USB Flash Drives. Great Buy.
You're windows computer should recognize the base and install software to run this device as well.3) Then unplug both, reassemble the hub, and plug the assembled hub back into that same usb port you used to get it recognized.It's essential to use the same usb port. I did this and then used a different usb port in the back of the machine and it wouldn't work. It's annoying, but it worked for me and I hope it will work for you too.
No updates for Window 7 or 8It work fine but when I start or restart the computer it get stuck (USB Controls Tests) until I unplug the hub.
The removable/portable part does not work when connected to hub!The base works, but that only gives you 3 ports not 7. When the portable 4 port is attached to the base, it does not work. The removable 4 port piece sometimes works when connected directly to the computer, but its intermittent.
I didn't pay very much for this hub, so maybe I got what I payed for... I was hoping to have 7 usable ports for my Mk808 Android Mini PC, but the detachable 4 don't seem to work the same. The back 3 are flawless. If you need 7 ports, you may want to spend a little more on another hub.
Answer: Windows 7? - the operating system is irrelevant. This is simply a USB hub with power supplied by a plugin transformer. This will give you more places to attach USB devices without overloading the original USB port. (The silver section CAN be plugged into a USB port and overload that port with the four devices plugged into it, if you wish..)