2 Hot Swap caddys for 40 pin (IDE I assume) hard disc drives. External dimensions of each on mm: 145W X 210D X 40H Asmshown on the last 4 photos, the front panel (front 5mm or so of the unit) is slightly wider, at 146.5mm. The caddy connects to its outer case with what looks like a SCSII connection, but the drive and PC connectors are 40 pin as shown. I have seen IDE connector converters, so not sure what other drives could be mounted in these. They are lockable, and seem to use the same key, of which there are 2. see photos. desktop computers only, the outer case is mounted in the computer, and the caddy, when unlocked, can be released, and the trays swapped, etc. (SH C1)
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