Specifications

The sliding rail system for the Dell PowerEdge T420 provides tool-less support for 4-post racks with
square or unthreaded round mounting holes. Compared to the T610 sliding rails that required the
use of adapter brackets, the sliding rails for the T420 now offer support for threaded hole racks with
the ReadyRails II mounting interface.
The ReadyRails II sliding rails for the T420 support tool-less mounting in 19”-wide, EIA-310-E
compliant square hole and unthreaded round hole 4-post racks. The rails also support tooled
mounting in threaded hole 4-post racks and are available with or without the optional cable
management arm (CMA).
The rails ship in the tool-less mounting configuration, but can be easily converted to the tooled
configuration. The optional CMA can be mounted on either the left or right side of the sliding rails
without the use of tools for fast and easy deployment. The T420 is backward compatible with the
T610 rails and CMA. The T420 supports sliding rails only. Static rails are not supported. Mounting in
2-post racks is not supported.
Figure 9 shows the sliding rails with the CMA installed.
Table 19 lists the supported rack types for the T420.
Product
Rail
Identifier
Mounting Interface
Rail Type
Rack Types Supported
4-Post
2-Post
Square
Round
Thread
Flush
Center
T420
C2
ReadyRails II
Sliding



X
X
Screws are not included in the kit due to the fact that threaded racks are offered with a variety of
thread designations. Other factors to consider when deploying the T420 include the spacing
between the front and rear mounting flanges of the rack, the type and location of any equipment