It has come to my attention that the thumbscrews on the front panel of Xserves are a very important component of the overall structural integrity of the rack mounting system. they not only keep the Xserve from coming out of the case, but they also secure the forward portion of the server to the mounted top case. I’ve seen many Xserves that seemed as if they could pop out of their cases due to a small amount of bowing in the case. Having the thumbscrews tightened down adds another vertical support component.
