The adaptor looks a bit on the flimsy side, but as long as you're not ham-fisted with it, it should give you good service.
One thing that did concern me was when I was using it in my Lexmark printer, it wasn't that easy to pull out, but thats not Sony's fault.
It works very nice in Sony equipment with the spring mechanism though
If you have a PSP or digital camera, this really should be part of your arsenal