Dell PowerEdge R210 II Technical Guide 18
Figure 6. Internal Chassis View
4.9 Rails
4.9.1 ReadyRails Static Rails
ReadyRails
TM
Static Rails for 4-post and 2-post racks support the following:
Tool-less installation in 19” EIA-310-E compliant square or unthreaded round hole 4-post racks
including all generations of Dell racks
Tooled installation in 19” EIA-310-E compliant threaded hole 4-post and 2-post racks
See section 14 for more details.