DELL POWEREDGE R320/R420/R620 SERVER RAILS SLIDING READYRAILS II 1U RAIL KIT A7. DELL has Four styles of rail kits for more options when mounting your DELL server into a rack. These rails can also be used with a DELL rack if the RAPID RAILS are not available, however they must be mounted using the screws through the square holes rather than snapping in.
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