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Pair of black adjustable server mounting rails with screws

CyberPower

CyberPower 4POSTRAIL server accessory 231 lb 1U 2U rail kit

SKU CH-BSAE-N6VS5 MPN 4POSTRAIL

Universal adjustable rail kit mounts 1U or 2U servers up to 231 lb in four-post racks

  • Product typeMounting Rail Kit
  • Product colorBlack
  • Key featuresMaximum Load Capacity: 104.78 kgFeatures: Adjustable LengthH
  • Supports up to 231 lb of equipment weight
  • Adjustable depth up to 29 inches fits varied racks
  • Low 1.8 inch profile suits 1U and 2U servers
  • Includes left and right rails plus mounting screws
  • Black finish matches standard server cabinet aesthetics

Universal 1U 2U Rack Rail Kit

The CyberPower 4POSTRAIL is a universal mounting rail kit designed for 1U and 2U server equipment in four-post racks. It supports devices weighing up to 231 lb. The kit includes left and right rails plus mounting screws for immediate installation. It suits administrators deploying standard-height rack appliances.

Adjustable Depth Up To 29 Inches

Rails adjust in depth to a maximum of 29 inches (736.6 mm) to fit varying rack depths. The fixed cross-section measures 1.8 inches high by 1.5 inches wide (44.5 mm by 38.1 mm). Verify that your rack posts provide the required clearance and hole pattern before purchase. The 1.63 kg rail weight adds minimal load to the rack structure.

Simple Bolt-On Installation

Installation uses the supplied screws to bolt rails directly to rack posts; no specialised tools are required. The most common issue is misaligned post holes causing the rails to sit unevenly. Ensure the rack depth falls within the adjustable range or the rails will not reach both front and rear posts. The product has been available since 2015.

How it compares

Measured against everything we stock in Drive Cages & Server Add-Ons, at today’s prices. Recalculated every night.

Price $51.99
Cheaper than about 61% of the 1,119 comparable items (median $74.99).

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Specifications

Product
Brand nameCyberPower
Model name4POSTRAIL
Product typeMounting Rail Kit
Product colorBlack
Size & build
Shipping weight2.04 kg
Package size476 × 70 × 64 mm

Questions about this item

Should I use this rail kit for a 1U or a 2U server?

The kit supports both 1U and 2U heights, so choose based on the rack height your server occupies.

What does the 231 lb load capacity mean once the rails are installed in a rack?

It means the pair of rails can safely hold equipment weighing up to 231 lb (104.78 kg) when mounted in a four-post rack.

What rack depth does the adjustable 29 inch depth accommodate in practice?

The rails extend from the front posts to a rear-post spacing of up to 29 inches (736.6 mm), fitting most standard four-post racks.

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