Just What to know what it is used for

[Rahl12]

Just what to know what these slots are for on this PC. Sorry if this is the wrong place to post this. 



This is at the front of computer

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[DaveLembke]

Removable Drive bays they appear to be. So that Hard Drives can be added or removed easily or on the fly with hot swap drives. So this is likely a Server type system.

[camerongray]

As Dave says they are hard drive trays, not hot swap like on a server though (those would generally be on the outside of the case).  They are just brackets that make it easy to mount the drives often without needing screws, you slide the bracket out, clip it onto the drive then slide the drive back into the case where it will clip in place.  These are fairy common on high end cases.

[DaveLembke]

Thanks for correcting camerongray ... quick look at this pic yesterday and distracted at same time, I originally saw these at the front of a case. Today looking closer this is an actual pic of the inside of the case as an open panel side view and so cameron is correct.