I bought this Emulator II in November, 2010. It was owned by a guy in Seattle, WA. He bought it from someone in Salt Lake City, I think.
When I bought it, it had one of its two original 5 1/4″ floppy drives replaced with a 3.5″ drive. I’ve since removed the 3.5″ floppy and replaced it with a HxC floppy drive emulator. The HxC uses a SD memory card for storage so you can litterally save thousands of sample on it. I highly recommend getting a HxC if you have an old device like this that takes big floppies.
Here’s some photos on the HxC Rev. C install. At the end of 2012, I replaced the HxC Rev. C with a Rev. F, which fits in a 3.5″ to 5 1/4″ floppy drive adaptor for mounting in the EII.