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    Server System configurator/ABS
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    SiverStone CS-RM51 5U rackmount server chassis with dual 180mm fans and enhanced liquid cooling compatibilit

    • Supports up to SSI-EEB motherboards
    • Includes 2 x Air Penetrator 184i PRO fans for superior air intake
    • Supports 360mm liquid cooling radiator
    • 8 PCI expansion slots
    • Reserved sliding rail mounting holes for quick rail installation
    • Includes one USB Type-C interface
    • Upright or horizontal placement flexibility
    • Secondary PSU can be installed if 3.5" drive cage is to be left unoccupied
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    Overview
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    Any questions? Ask CelesteSM will help you find out quickly.

    RM51
    RM51, 5U rackmount server chassis with dual 180mm fans and enhanced liquid cooling compatibility
    • Supports up to SSI-EEB motherboards
    • Includes 2 x Air Penetrator 184i PRO fans for superior air intake
    • Supports 360mm liquid cooling radiator
    • 8 PCI expansion slots
    • Reserved sliding rail mounting holes for quick rail installation
    • Includes one USB Type-C interface
    • Upright or horizontal placement flexibility
    • Secondary PSU can be installed if 3.5" drive cage is to be left unoccupied
    • Side switch for chassis intrusion security
    image for this item
    Internal layout

    Model No. - SST-RM51

    Motherboard - SSI-EEB, SSI-CEB, Extended ATX, ATX, Micro-ATX, Mini-ITX

    Chassis form factor - 5U

    Material - Steel

    Expansion Slot - 8

    Limitation of PSU - 160mm~190mm
    (Removal of 3.5" drive cage eliminates PSU depth limitation)

    Power Supply -  Primary PSU slot: PS2 (ATX) / Mini Redundant

                                  Secondary PSU slot: SFX (occupies 3.5" bracket)

    image for this item
    Front I/O Port
    • USB Type-C x 1
    • USB 3.0 x 2

    LED indicator

    • Power status x 1
    • HDD activity x 1
    • LAN activity x 2

     

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    Cooling system

    Front

    • 120mm x 3 / 180mm x 2
      (2 x Air Penetrator 184i PRO fans included)

    Rear

    • Rear I/O: 120mm x 1 / 140mm x 1
      Rear fan cage: 80mm x 2

    Limitation of CPU cooler

    • Height w/ expansion card retainer: 181mm
    • Height w/o expansion card retainer: 192mm

     

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    Expansion card
    • Length: 455mm (without installing front fans and radiators)
    • Width w/ expansion card retainer: 157mm
    • Width w/o expansion card retainer: 198mm

     

    image for this item
    Dimension
    • Incl. rear fan cage: 440mm (W) x 220mm (H) x 530mm (D), 51.3 liters
    • Excl. rear fan cage: 440mm (W) x 220mm (H) x 485mm (D), 46.95 liters
    • Incl. rear fan cage: 17.3" (W), 8.66" (H), 20.87" (D)
    • Excl. rear fan cage: 17.3" (W), 8.66" (H), 19.1" (D)

    The upright or horizontal placement flexibility is a great feature for those who need to optimize their server space, and the ability to install a secondary PSU if the 3.5" drive cage is left unoccupied adds additional redundancy options.

    Overall, the RM51 seems like a great choice for those who need a high-performance server chassis with excellent cooling and flexibility.

    5U rackmount server chassis? Steel black Bezel + Steel body support EEB M/B 2* 3.5" drive bay or SFX-L PSU 2* 3.5" drive bay or 3*2.5 "bay? 4*2.5 "bay?2*180mm front fan? 1*140mm + 2*80mm rear fan slot? 2*USB 3.0 Type A, 1*USB3.1 Gen 2 C type?support ATX or PS/2 Mini Redundant PSU?Support 423mm graphics card?

  • Supports up to SSI-EEB motherboards
  • Includes 2 x Air Penetrator 184i PRO fans for superior air intake
  • Supports 360mm liquid cooling radiator
  • 8 PCI expansion slots
  • Reserved sliding rail mounting holes for quick rail installation
  • Includes one USB Type-C interface
  • Upright or horizontal placement flexibility
  • Secondary PSU can be installed if 3.5" drive cage is to be left unoccupied
  • Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Limited Warranty period (parts): 1 year
    • Limited Warranty period (labor): 1 year
    • Read full details

    Return Policies

      We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.

    • Return for refund until: January 31, 2027
    • Return for replacement until: January 31, 2027
    • This item is covered by Newegg.com's Extended Holiday Return Policy.
    • Read full return policy for details.

    Manufacturer Contact Info

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