I have had a problem seeing my QP1R's two SD cards on my iMac's for a while now, I hoped replacing our old iMac would solve that problem but it hasn't. I now think it is something that changed during an Apple update. Anyway it still connects normally to my ancient Mac Air.
If I connected my QP1R to my old Mac (or my old Mac Air now) the three storage mediums appear, QP1R, QP_TF, and another QP_TF. Note that the QP1R has two SD Cards and also its internal memory, So I can drag and drop music into any of those.
On my new iMAC I see only QP1R and QP_TF, so I only get to see one of my SD cards at a time. My work around has been to cycle the plug and hope the opposite SD card gets picked as the iMac randomly chooses which SD card to display.
Anyone else find a solution to this problem?