I have a 4GB 40-pin SSD in my A1200, no real need over CF but i prefer not needing the CF adapter and no extra cable, the one I use is obtainable in both 40 and 44 pin if you do not want to use an adapter. Great one and where I buy them fair price

Here is mine in my A1200

I use a PATA to USB adapter to work with the drive on my PC's so no more hassle then using a CF card reader.
Edit:
IDE ssd is 44 pin
There is both 40 and 44-pins PATA/IDE SSD's avaliable but doesn't matter since there is small adapters both ways. As I wrote mine is 40-pin and I have a full sized 2,5" 128GB 40-pin SSD in an old computer.