SilverStone RM21-308 Rackmount Server Case 2U Micro-ATX Black
SilverStone RM21-308 Rackmount Server Case 2U Micro-ATX Black, photo 2
SilverStone RM21-308 Rackmount Server Case 2U Micro-ATX Black, photo 3
SilverStone RM21-308 Rackmount Server Case 2U Micro-ATX Black, photo 4
SilverStone RM21-308 Rackmount Server Case 2U Micro-ATX Black, photo 5
SilverStone RM21-308 Rackmount Server Case 2U Micro-ATX Black, photo 6
SilverStone RM21-308 Rackmount Server Case 2U Micro-ATX Black, photo 7
SilverStone RM21-308 Rackmount Server Case 2U Micro-ATX Black, photo 8
SilverStone

SilverStone RM21-308 Rackmount Server Case 2U Micro-ATX Black

SKU HC-613740MPN SST-RM21-308

Highlights

  • 2U form factor, 19-inch rack compatible
  • Supports Micro-ATX and Mini-ITX motherboards
  • Eight front hot-swap drive bays
  • Three 80mm fans included
  • 68mm max CPU cooler height
  • 160mm max PSU depth for ATX or redundant units

Key specs

Case Type
Server Case
Compatible Motherboard Formats
Micro-ATX, Mini-ITX
Max. Motherboard Format
Micro-ATX
PSU Format
ATX, redundant PSU
Power Supply Position
rear bottom
80 mm fans
3
All specifications
$349.99
  • ≈ 0.004537 BTC
  • ≈ 0.1528 ETH
  • ≈ 350.35 USDT

In stock Ships by Tue, Nov 10 when paid today.

  • Delivery to the United States: $89.80 DHL Express Worldwide · arrives Wed, Nov 11 – Mon, Nov 16 if paid today
  • Rate locked at checkout Up to 60 min to send BTC, 30 min for ETH and USDT
  • New, sealed and genuine Full manufacturer warranty
  • 30-day returns Unused items in original packaging
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Overview

A 2U rackmount server chassis that fits Micro-ATX and Mini-ITX motherboards. It provides eight front hot-swap drive bays and includes three 80mm fans for airflow.

Design and Build

The steel chassis measures 480mm deep, 430mm wide, and 88.5mm tall, weighing 7.3kg. It fits standard 19-inch racks in a 2U space. The front panel is black with silver accents and holds the drive bays and I/O ports.

Motherboard and Cooling

Accepts Micro-ATX and Mini-ITX boards. CPU cooler clearance is limited to 68mm. Three 80mm fans are pre-installed for directed airflow. No radiator support is provided.

Storage and Expansion

Eight hot-swap bays at the front accommodate 2.5-inch or 3.5-inch drives. One internal 2.5-inch bay, one internal 3.5-inch bay, and one external 5.25-inch bay are also available. Four PCI expansion slots are provided at the rear.

Power and Connectivity

The rear-bottom mount accepts standard ATX power supplies up to 160mm deep or redundant PSU modules. Front I/O includes one USB 3.0 Type-A port and one USB 2.0 Type-A port.

RM21-308 Rackmount Server Case 2U Micro-ATX Black specifications

General
BrandSilverStone
Manufacturer part no.SST-RM21-308
EAN4710007226216
Case
Case TypeServer Case
Motherboard Support
Compatible Motherboard FormatsMicro-ATX, Mini-ITX
Max. Motherboard FormatMicro-ATX
Internal Dimensions
Max. CPU Cooler Height68 mm
Max. PSU Length / Depth160 mm
Power Supply
PSU FormatATX, redundant PSU
Power Supply Positionrear bottom
Fan Support
80 mm fans3
Radiator Support
Max. Radiator Compatibilityno
Drive Bays
2.5 inch internal drive bay1
3.5 inch internal drive bay1
5.25 inch external drive bay1
Hot swap drive baysYes
External Ports
USB 3.0 (external) Type A1
USB 2.0 (external) Type A1
Case Features
I/O positionFront
Side panelclosed
Front doorNo
Case Features (continued)
Cable ManagementNo
Filters IncludedNo
Noise dampeningNo
Mainboard slide / trayNo
Remote includedNo
Transport SystemNo
Expansion Slots
Expansion slots / PCI slots4
Features
Housing FeedthroughNo
Connectivity
Card readerNo
Display
Display IncludedNo
Lighting
Lighting / RGBNo
Fan / RGB controlNo
Color
Primary ColorBlack
Secondary ColorSilver
Fan Main Color (Frame)Black
Materials
MaterialsSteel
Dimensions
Length / Depth480 mm
Width430 mm
Height88.5 mm
Weight7.3 kg
Additional Contents
Included fans3x 80 mm

Specifications come from the manufacturer and can change without notice. Check the box contents and compatibility before ordering; our team answers questions within one business day.

Shipping & returns

Delivery to the United States: $89.80DHL Express Worldwide · arrives Wed, Nov 11 – Mon, Nov 16 if paid today

Ships from our warehouse in Germany: in stock, it leaves within 1–2 business days, tracked to the door.
ToBusiness daysThis item
GermanyDHL Paket1–2Free
Other EU countriesDHL Parcel International2–8Free
UK, Switzerland and NorwayDHL Parcel International3–7$39.80
United States and CanadaDHL Express Worldwide2–5$89.80
Asia and the Middle EastDHL Express Worldwide2–5$119.80
Australia and New ZealandDHL Express Worldwide3–6$139.80
  • Discreet packaging Plain, unbranded box — no crypto or brand references outside
  • Returns 30 days for unused items in original packaging; faulty items are on us
Rates and delivery times by country

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