Here is a very talented young man.
If you follows his series of videos you can receive and decrypt your own GSM mobile phone calls with the RTL-SDR USB-stick,
Bought this nice media interface of eBay for around 33USD and I must say I’ve got value for my money.
It does not have any brand but it is marked as the moddel CH-528 though.
Anyway, it can read several kinds of memory cards, it has several usb ports and audio jacks in its front.
What makes it very useful for me is that I now can connect both old IDE drives and newer SATA drives on the fly without opening my computer or rebooting. This is a very good thing as friends and family constantly drops by with a “computer problem” which needs to be rectified. Hooking up a drive for data recovery is now very easy.
Here’s some pix…