FWIW
I have a SIIG USB 3.0 Multi Card Reader model ju-mr0712-s1 that had exactly the same problem. Apparrently the actual hardware is made by Realtek and rebranded as SIIG.
SIIG tech support was pathetic and said since it wasn’t tested on a Surface 3 Pro, they couldn’t help me.
Since most people aren’t the first one to discover a computer problem, I started searching and found this thread. Since I had nothing to lose, I downloaded and tried to install the firmware update mentioned here.
It worked perfectly! Thanks SanDisk for fixing SIIG’s problem!!!
