DellPowerEdge R410 Technical Guide 16Figure 6. Back View With Non-redundant Power Supply4.5 NIC IndicatorsSee the NIC Indicator Codes section in the About Your System chapter of the PowerEdge R410Hardware Owner’s Manual on Support.Dell.com/Manuals for more information.4.6 Rails and Cable Management4.6.1 ReadyRails Sliding RailsReadyRailsTM Sliding Rails for 4-post racks support includes:• Tool-less installation in 19” EIA-310-E compliant square or unthreaded round hole 4-post racksincluding all generations of Dell racks• Tooled installation in 19” EIA-310-E compliant threaded hole 4-post racks (requires the 1UThreaded Rack Adapter Brackets Kit)• Full extension of the system out of the rack to allow serviceability of key internal components• Optional cable management arm (CMA)Rail depth and adjustment ranges are as follows:• Rail depth without the CMA: 714 mm• Rail depth with the CMA: 835 mm• Square-hole rack adjustment range: 686-883 mm• Round-hole rack adjustment range: 672-876 mm• Threaded-hole rack adjustment range: 651-897 mm4.6.2 ReadyRails Static RailsReadyRailsTM Static Rails for 4-post and 2-post racks support:• Tool-less installation in 19” EIA-310-E compliant square or unthreaded round hole 4-post racksincluding all generations of Dell racks• Tooled installation in 19” EIA-310-E compliant threaded hole 4-post and 2-post racksRail depth and adjustment ranges are as follows:• Rail depth: 622 mm• Square-hole rack adjustment range: 608-879 mm• Round-hole rack adjustment range: 594-872 mm• Threaded-hole rack adjustment range: 604-890 mmSee Section 14, Rack Information, for more information.