[IMAGE]   two 3.5 hdd bay at right and left upper corner of case, each one accommodating one 3.5 hdd or two 2.5 hdd/ssd if you use Dell 2.5 to 3.5 adapter.  Note Dell sata power cable already has two sata power connectors precut to exact length to support two 2.5 hdd.  system board has three sata III (blue black) for hdd/ssd and one sata I (white connector) for odd.   XPS 8950 Service Manual (dell.com) [IMAGE] [IMAGE] Original Dell Optiplex 2.5"SSD - 3.5" HDD Adapter Bracket Caddy Tray R494D F767D
Can someone knowledgeable tell me the maximum number of 3.5" SATA drives that can be installed into an XPS 8950?  Pictures of the chassis suggest there are two bays but the specs mention 3 SATA ports for HDDs and 1 for the optical drive.
XPS 8950, number of 3.5" SATA drives?