[Ham-Computers] External IDE Drive "holder"?

[KD7JYK DM09]

On an investigations show last night, I caught glipses of an external IDE 
hard drive reader.  It was an external box about the size of theee beta 
cassettes in size, an IDE hard drive was plugged into the TOP of the unit to 
be read.  This was NOT so much an external hard drive holder as a reader for 
quick swapouts, the drive was junk chunked into the top of it, then pulled 
and another unit plopped in.

Any ideas what this type of IDE hard drive reader is called?

I'd like to find one.

Kurt