Brocade Communications Systems X6-4 Hardware Installation Manual page 53

FIGURE 19 Using clip nuts and retainer nuts to secure screws to rack rails
Brocade X6-4 Director Hardware Installation Guide
53-1004106-07
Installing the 8U Chassis Mid-Mount Rack Kit for Two-Post Racks (XBR-DCX4S-0126 and XBR-X64-0126)
1. Clip nuts (for rails with round holes)
2. Retainer nuts (for rails with square holes)
3. Rail
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