This tutorial will show you, step-by-step, how to install a rear flex bay into a 24-Bay Dell PowerEdge R740xd server. The installation would also be the same for installing in an R740xd 12-bay server; however, with rear flex bays for 12-bay servers, the SAS cable placement is different on the chassis backplane, and you would need to use a different SAS cable (more on that later).
NOTE: With 12t...