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Dell Technologies Rail, Bracket, and Tray Guide November 2022

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Rack rails

For a list of switching equipment with appropriate rails, see the Quick reference section.

Table 1. RailsTable listing rail details.
Abbreviation Rail description Rack height Part number SKU Additional information
1U-S-RR Standard ReadyRail (1)1U N243X 770-BBGY, 770-BDRL Standard Dell ReadyRail mounting slides. A5. For a 434 mm (17.08 in) wide switch.
1U-R-RR Reversible ReadyRail 1U J9CKF 770-BCFQ Standard Dell ReadyRail where the rails can be reversed. For a 434 mm (17.08 in) wide switch.
  • Bi-directional Ingress/Egress switch installation (Install from either front or rear of rack).
  • In-rail power cord routing access and cord stabilizer (for example, route power cord through egress spot in the rail itself).
1U-M-RR Modified ReadyRail 1U HRTVK 770-BCIN Similar to the Standard ReadyRail but with the stop removed. Supports a 450 mm to 793 mm (17.72 in to 31.2 in)-rack span.
2U-S-RR Standard ReadyRail (1)2U 6CJRH 770-BBJF Standard B9 ReadyRail mounting slides. Use with the Z9264F-ON, S6100-ON, or S5296-ON products.
2U-E-RR Extended ReadyRail 2U NKFHM 575-BBMQ Must be used with the standard B9 ReadyRail but built specifically for reverse-install scenarios. Permits an extra 9” face offset to align with longer servers.
1U-Z93xx-RR Z9332F-ON ReadyRail 1U 08P6H 770-BDKS Use with a 438.5 mm (17.26 in) wide switch. Uses a different screw placement from the standard ReadyRails. The rack span is 17.18 to 32.30 inches (436.4 mm to 820.4 mm).
1U-S52-S41-12-4P S5212F-ON & S4112-ON Series rails. Use with the S5212F-ON dual-tray. 1U TTVK9 N/A Use these rails with the S5212F-ON or S4112-ON Series dual-trays in four-post installations.
1U-EMC-3.14-RR EMC Gen3.14 bezel rails 1U 19T1K N/A EMC rails to use in rear-mount (I/O-side of the switch faces the back of the rack) four-post racks. Use with a 434 mm (17.08 in) wide switch.
  • 558.8 mm, 711.2 mm, or 787.4 mm (22 in, 28 in, or 31 in) offset
  • 558.8 mm to 863.6 mm (22 in to 34 in) rack span
1U-EMC-3-RR EMC Gen 3 bezel rails 1U V45CP N/A EMC rails to use in rear-mount (I/O-side of the switch faces the back of the rack) four-post racks. Use with a 434 mm (17.08 in) wide switch.
  • 558.8 mm, 711.2 mm, or 787.4 mm (22 in, 28 in, or 31 in) offset.
  • 558.8 mm to 863.6 mm (22 in to 34 in) rack span.
2U-EMC-Z92xx-RR Z9264F-ON bezel rails for EMC 2RU Gen3.14/Gen3 bezel 2U 150-042-005 N/A Platform-specific rails used with Gen 3.14 or Gen 3 bezel rails. Use these EMC rails with rear-mount (I/O-side of the switch faces the back of the rack), four-post racks.
  • 558.8 mm, 711.2 mm, or 787.4 mm (22 in, 28 in, or 31 in) offset.
  • 558.8 mm to 914 mm (22 in to 36 in) rack span.
1U-DN-RR Z9432F-ON & S5448F-ON Special ReadyRails 1U TDYXP 770-BDYT For a 438.5 mm (17.26 in) wide switch. Four-post rack-mount installations.
  • 539.7 mm to 1041.4 mm (21.25 in to 41 in) rack span.
2U-DN-RR Z9664F-ON ReadyRails 2U N7WVX N/A Platform-specific ReadyRail. Use with a 438.5 mm (17.26 in) wide, 2 RU switch.
  • 558.8 mm to 1066.8 mm (22 in to 42 in) rack span.
2U-DN-4P Z9664F-ON Special Rail kit 2U JGF0H N/A Platform-specific 4 Post bracket Rail. Use with a 438.5 mm (17.26 in) wide, 2 RU switch.
  • 584.2 mm to 787.4 mm (23 in to 31 in) rack span.
2U-EMC-RR Z9664F-ON EMC Rail kit 2U JC5HG N/A Platform-specific rails used with Gen 3.14 or Gen 3 RU bezel. Use these EMC rails with rear-mount (I/O-side of the switch faces the back of the 4 post rack).
  • 711.2 mm, or 787.4 mm (28 in, or 31 in) offset.
  • 558.8 mm to 914 mm (22 in to 36 in) rack span.
1U-DN-RR-Reversible Z9432F-ON & S5448F-ON Special ReadyRails 1U X54PT N/A For a 438.5 mm (17.26 in) wide switch. Four-post rack-mount installations.
  • 560 mm to 877 mm (22 in to 34.5 in) rack span.
1U-EMC-Gen3/3.14-RR EMC Gen3/3.14 bezel rails for S5448F-ON, Z9332F-ON, and Z9432F-ON 1U 6DWDR N/A EMC rails to use in rear-mount (I/O-side of the switch faces the back of the rack) four-post racks. Use with a 438.5 mm (17.26 in) wide switch.
  • 711.2 mm or 787.4 mm (28 in or 31 in) offset
  • 558.8 mm to 863.6 mm (22 in to 34 in) rack span

(1) Extended NEBS "Deep rack" rails for 2RU switches available upon request.

1U-S-RR: 1RU Standard ReadyRail (N243X)

Use with a 434 mm (17.08 in) wide switch.

Illustration of the 1U standard ReadyRails.

Bidirectional Ingress/Egress. In-rail power cord route access and stabilizer. Use with a 434 mm (17.08 in) wide switch.

Illustration of the 1U reversible ReadyRail.

Similar to the Standard ReadyRail but with the stop removed. Supports a 450 mm to 793 mm (17.72 in to 31.2 in)-rack span.

Illustration of the modified ReadyRails (Nokia-specific rail).

Use with the Z9264F-ON, S6100-ON, or S5296-ON products.

Illustration of the 2RU ReadyRails.

For reverse-install scenarios. Permits an extra 9” face offset to align with longer servers.

NOTE Must be used with the standard ReadyRail kit, B9.
Illustration of the 2RU ReadyRail extention rails.

For four-post racks.

Illustration of the Z9334F-ON rails.

For four-post racks. Use with the S5112F-ON or S4112-ON Series dual-trays.

Illustration of the S5212F-ON or S4112-ON Series rails.
  • For rear-mount (I/O-side of the switch faces the back of the rack) four-post rack installation.
  • 22 in, 28 in, or 31 in offset (558.8 mm, 711.2 mm, or 787.4 mm offset).
  • The rack span is 22 in to 34 in (558.8 mm to 863.6 mm wide).
  • Use with a 434 mm (17.08 in) wide switch.
Illustration of the EMC Gen 3.14 rails.
  • For rear-mount (I/O-side of the switch faces the back of the rack) four-post rack installation.
  • 22 in, 28 in, or 31 in offset (558.8 mm, 711.2 mm, or 787.4 mm offset).
  • The rack span is 22 in to 34 in (558.8 mm to 863.6 mm).
  • Use with a 434 mm (17.08 in) wide switch.
Illustration of the EMC Gen3 rails.Illustration of the Z9264F-ON rails for Gen3.14/Gen3 bezel rails.Illustration of the Z9432F-ON or S5448F-ON ReadyRails.
  • Four-post rack.
  • Rack span is 21.25 in to 41 in (539.7 mm to 1041.4 mm).
Illustration of the Z9664F-ON ReadyRails.
  • Platform-specific ReadyRail.
  • Use with a 438.5 mm (17.26 in) wide, 2 RU switch.
  • Rack span is 22 in to 42 in (558.8 mm to 1066.8 mm).
Illustration of the Z9664F-ON Special ReadyRails.
  • Platform specific Four-post bracket rail.
  • Use with a 438.5 mm (17.26 in) wide, 2 RU switch.
  • Rack span is 23 in to 31 in (584.2 mm to 787.4 mm).
Illustration of the Z9664F-ON EMC rail kit.
  • Platform-specific rails used with Gen 3.14 or Gen 3 RU bezel.
  • Use these EMC rails with rear-mount (I/O-side of the switch faces the back of the 4 post rack)
  • 28 in, or 31 in offset (711.2 mm, or 787.4 mm).
  • Rack span is 22 in to 36 in (558.8 mm to 914 mm).
Illustration of the Z9432F-ON & S5448F-ON Special ReadyRails.
  • Platform specific ReadyRails
  • Four-post rack-mount installations.
  • Use with a 438.5 mm (17.26 in) wide switch.
  • Rack span is 22 in to 34.5 in (560 mm to 877 mm).
Illustration of the Z9432F-ON & S5448F-ON Special ReadyRails.
  • For rear-mount (I/O-side of the switch faces the back of the rack) four-post rack installation.
  • 28 in or 31 in offset (711.2 mm or 787.4 mm offset).
  • The rack span is 22 in to 34 in (558.8 mm to 863.6 mm wide).
  • Use with a 438.5 mm (17.26 in) wide switch. S5448F-ON, Z9332F-ON, and Z9432F-ON

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