No way to use three or four USBs at the same time on your laptop or computer, take a view at this 4 Port USB Hub, it can surely solve your problem.This new stylish 4 ports USB hub provides higher transfer rate at 480Mbps via USB 2.0 port. It easily adds four more high speed USB ports to your laptop or PC. It's great for most low-power USB peripheries, USB mouse, USB keyboard, USB web camera, USB sound card etc. The small body design of this 4 Port USB Hub makes it easy and convenient to be stored even in your pocket. Friendly and ergonomic designed, this Mini USB Hub is also easy to be portable.Hurry up to have this 4 Port USB 2.0 Hub, it can help you a lot during your daily life while using the laptop or computer.
Pros:Easy to use, useful and very cheap. It works very well.
Other Thoughts:I use it to my microSD cards. In my opinion, it's easier than using cables or bluetooth. Considering that in my job I do not have computers with bluetooth function or input for microSD, it's very useful.
Other Thoughts:I've read some people may have gotten faulty ones, but the one that I got works.
<br/>It has 4 ports to use, and connects to the computer via usb. There are 4 switches on the back, they power on/off each one of the usb slots. This works great for expanding the number of usb ports you have.