Not the answer that you're looking for Hammerhead, but you could connect your SD card via an "SD to USB" adaptor to achieve that result.
Personally, I found extracting and reinserting SD cards fiddly, and I grabbed the adaptor to solve that.
Anecdotally, I now use a retired 80Gb 2.5" hard drive, and as a bonus find I don't need to replenish my files so often.
2014 Overland CRD
Perth, Western Australia