Hello,
I think that everyone is missing what you are trying to accomplish, as I solved this problem on my Toshiba satellite. My laptop has usb 2.0 ports and no express card slot, and rightly so, as others have stated you'll need to get a new laptop (due to motherboard) to enjoy the higher transfer rates....unless... you also have an Express Card Slot or an eSata port on your laptop. My laptop did not have an express card slot but did have an eSata port. Do what I did. Buy an eSata to USB 3.0 cable to get your eSata port connected to an externally powered usb 3.0 hub with a coupler. Any externally powered USB 3.0 hub you have or buy will do. . Again if you "have" an express card slot, just get one with usb 3.0 and plug it in, but note some of these cards have the "power supply" sold separately so investigate what comes with the card itself, that's what I did for my Lenovo T510 laptop, get one with a power adapter that plugs into the side of the express card. But if you "don't" have a express card port and you "do" have an eSata port, this is one way to solve this problem. First, get an eSata to USB cable to go from the PC to the hub, I suggest the [Vantec NexStar eSATA 6Gb/s to USB 3.0 Adapter (CB-ESATAU3-6)], next get a female to female usb 3.0 coupler to connect the 3.0 hub's male cable end to your esata to USB 3.0 cable, I suggest [Kingtop USB 3.0 Adapter Coupler]. Now your (any type) "externally powered" USB 3.0 hub ( remember eSata is not powered) can connect into your laptop at 3.0 transfer speeds and your 3.0 devices requiring power can be fed what they need from the hub
1. No 3.0 ports, but have express card slot = Use the Express Card Slot, easiest cheapest solution.
2. No 3.0 ports, No Express card slot = see solution above at about 40-50 bucks.
3. No 3.0 ports, No Express card slot, No eSata port = bad news for you! Buy new PC! Peace!
Note: If all you are wanting is just and only a way to connect an external drive and are in the situation #2 above, Vantec sells a case that has the eSata connection for the transfer speed and the case has a second connection to an existing usb 2.0 port [NST-200SU-BK], that it uses the 2.0 port as a power port only to drive the one HDD/SSD device and uses the eSata connection for data transfer. It will move data as fast as a 3.0 connection. I'd go with the hub solution above as then you can connect all kinds of 3.0 devices, multiple drives or whatever, but it depends on what you are trying to do, single external drive interface or multiple devices.
Note 2: This is for laptop solutions only, desktops are easily upgraded by getting a PCI card with 3.0 ports and plugging into available slot.