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Silver 5U server chassis with dual 180mm front fans and front USB-C port

Silverstone Technology

Silverstone Technology RM51 5U server chassis

SKU CH-T0F9-ZGSTR MPN RM51

5U rackmount server chassis with dual 180mm fans, 360mm liquid cooling support, eight PCI slots and front USB Type-C

  • Chassis TypeDesktop
  • Motherboard CompatibilityMicro ATX / ATX/ Mini ITX/ EATX/ SSI EEB/ SSI CEB
  • Max CPU Cooler Height192 mm
  • Max GPU Length455 mm
  • Max PSU Length190 mm
  • Radiator OptionsFront - Up to 360mm / Rear - Up to 120mm
  • Supports SSI-EEB boards for high-density server builds
  • Dual 180mm Air Penetrator 184i PRO fans deliver strong front airflow
  • Front 360mm radiator support enables liquid-cooled CPU setups
  • Eight PCI slots give room for multiple add-in cards
  • USB Type-C front port adds modern device connectivity

5U rackmount chassis for server builds

The Silverstone RM51 is a 5U steel chassis that accepts SSI-EEB, SSI-CEB, EATX, ATX, Micro-ATX and Mini-ITX motherboards. It ships with two Air Penetrator 184i PRO 180 mm fans at the front and provides eight PCI expansion slots for add-in cards. The case can be mounted upright in a rack or placed horizontally on a desk.

Upgrade from smaller rack cases when expansion

Builders moving from 4U or shorter enclosures gain room for CPU coolers up to 192 mm tall and graphics cards up to 455 mm long. The front panel supports a 360 mm radiator while the rear takes a 120 mm unit, so liquid-cooling capacity rises with the extra height. A second PSU can be added only if the 3.5 inch drive cage is removed.

Limits set by 5U height and PSU brackets

The primary PSU bay accepts units 160 mm to 190 mm deep; longer modules fit only after the drive cage is taken out. Rear cooling is restricted to one 120 mm or 140 mm fan plus two 80 mm slots, and the front maxes out at three 120 mm or two 180 mm fans. Front I/O offers one USB Type-C and two USB 3.0 ports with power, drive and dual LAN activity LEDs.

Highlights

  • Supports SSI-EEB boards for high-density server builds
  • Dual 180mm Air Penetrator 184i PRO fans deliver strong front airflow
  • Front 360mm radiator support enables liquid-cooled CPU setups
  • Eight PCI slots give room for multiple add-in cards
  • USB Type-C front port adds modern device connectivity

Specifications

Chassis TypeDesktop
Motherboard CompatibilityMicro ATX / ATX/ Mini ITX/ EATX/ SSI EEB/ SSI CEB
Max CPU Cooler Height192 mm
Max GPU Length455 mm
Max PSU Length190 mm
Radiator OptionsFront - Up to 360mm / Rear - Up to 120mm
Fan OptionsFront - 2 x 180mm / Front - 3 x 120mm / Rear - 1 x 120mm / Rear - 1 x 140mm
Shipping weight16.78 kg
Package size533 × 457 × 229 mm

Questions about this item

What motherboard form factors fit in this 5U chassis?

The chassis accepts SSI-EEB, SSI-CEB, EATX, ATX, Micro-ATX and Mini-ITX boards.

Which step do builders often miss when rack-mounting the RM51?

Align the reserved sliding rail mounting holes with your rack rails before securing the chassis; the holes are pre-drilled for quick rail installation.

When would the 3.5-inch drive cage need to be removed?

Remove the cage to install a secondary SFX power supply, because the cage occupies the same bracket space.

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