Its just a ram drive configured to use the memory of a USB solid state device... you can make a ram drive without buying any software.
A RAMDrive (or RAM Disk some people call it). This will dedicate a section of your computer's memory to the temporary storage of folders and files. Why would you want to do such a thing? Accessing time for files on a RAM Drive are about 1,000 times quicker than a conventional drive. Also, if you have a situation where you're access the same files over and over again, a ram disk will help reduce wear and tear on your real hard drive. Of course the down side of all this is that files on a RAM Drive are gone when the computer is shut down (or crashes).
There are some software packages out there that will configure a RAM Disk Drive automatically. If you need more bells and whistles, check those out. The following method is free and allows a RAM Disk of up to 32MB.
1. Download
ramdisk.inf and
ramdisk.sys file and save them in the same folder (somewhere convenient).
2. Go to the Control Panel and click Add Hardware
3. Click Next and wait for the search to complete.
4. Choose "Yes, I have already connected the hardware" and click Next
5. Scroll to the very bottom and highlight "Add a new hardware device" and click Next
6. Choose "Install the hardware that I manually select from a list" and click Next
7. Wait for the search to complete and click Next
8. Highlight "Show All Devices" and click Next (warning: this part may take a few minutes)
9. Click Have Disk... (Important! Be sure not to click on anything else or scroll through the lists before you click Have Disk. Doing so will screw up this process.)
10. Click Browse and locate the folder you saved the ramdisk.inf file in, select ramdisk.inf and click Open
11. Click OK, then Next and Next again.
12. Click Continue Anyway if a warning pops up and then Finish
Now for the fun part!
13. Under the Start menu, click Run, type in regedit and click OK
14. Open the following: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\Ramdisk\Parameters
To set the size of the Ram Disk Drive, right click on DiskSize and choose Modify. Type in the new size under Value data. The maximum is 3,200,000 (in hexadecimal) which equals 32MB
15. If you need to, modify the DriveLetter enrty too. (the default is "Z")
16. Now navigate to:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\Fastfat
change the value of Start from 4 to 1
17. Exit the Registry Editor and Reboot