1. Introduzzjoni
The SilverStone RM21-304 is a high-performance 2U rackmount server chassis designed for professional storage environments. This manual provides detailed instructions for the proper setup, operation, and maintenance of your RM21-304 chassis to ensure optimal performance and longevity.
Key features include hard drive trays compatible with 2.5" or 3.5" drives, a fan assembly with motherboard support for up to Micro-ATX form factor, and flexible mounts for various power supply types (2U single/redundant server, PS2 ATX). The design also incorporates ergonomic, tool-less rail designs for simplified rack integration.
2. Informazzjoni dwar is-Sigurtà
TWISSIJA:
- Dejjem skonnettja l-enerġija qabel ma tinstalla jew tneħħi l-komponenti.
- Wear anti-static wrist straps to prevent electrostatic discharge (ESD) damage.
- Ensure proper grounding of the chassis and all connected equipment.
- Do not operate the chassis with the cover removed in a production environment.
- Refer to component manuals for specific installation requirements.
3. Kontenut tal-Pakkett
Ivverifika li l-komponenti kollha huma preżenti qabel ma tipproċedi bl-installazzjoni:
- SilverStone RM21-304 Chassis
- Accessory Kit (screws, standoffs, etc.)
- Gwida Quick Start (dan id-dokument)
- Optional: Sliding Rail Kit (if purchased separately)

Figure 3.1: Included accessory kit with various screws for different components.
4. Setup u Installazzjoni
4.1 Tħejjija tax-Chassis
Before installing components, ensure the chassis is placed on a stable, flat surface. Remove the top cover by unscrewing the retaining screws at the rear of the chassis.

Figura 4.1: Intern view of the RM21-304 chassis, showing fan assembly and drive bays.
4.2 Installazzjoni tal-Motherboard
- Install the I/O shield into the chassis rear panel.
- Align the Micro-ATX motherboard with the standoffs inside the chassis.
- Waħħal il-motherboard billi tuża l-viti xierqa mill-kit tal-aċċessorji.
4.3 Drive Installation (2.5" / 3.5" Drives)
The RM21-304 supports both 2.5" and 3.5" drives in its hot-swappable drive bays.
- Open the latch on the drive tray.
- Insert the 2.5" or 3.5" drive into the tray and secure it with screws.
- Slide the populated drive tray into an available drive bay until it clicks into place.

Figure 4.2: Close-up of a drive tray being inserted into the chassis.
4.4 Installazzjoni tal-Provvista tal-Enerġija
The chassis accommodates 2U single/redundant server or PS2 (ATX) power supplies. Install the power supply according to its manufacturer's instructions, securing it to the chassis rear panel.
4.5 Kejbils tal-Konnessjoni
Connect all necessary cables, including power, SATA, and front panel connectors (USB, power/reset buttons, LED indicators) to the motherboard and drives.
Video 4.1: Demonstrates how to connect cables to the motherboard and install the sliding rail. This video is provided by CICHENG INC, a seller.
Video 4.2: Illustrates the process of connecting cables within the chassis to the motherboard and installing the rail. This video is provided by CICHENG INC, a seller.
4.6 Optional: Sliding Rail Installation
For easy rack integration, optional sliding rails can be installed. Follow the instructions below to attach the rails to the chassis and the server rack.
- Separate the inner rail from the outer rail by pressing the release tab.
- Attach the inner rails to the sides of the RM21-304 chassis using the provided screws.
- Attach the outer rails to the server rack posts, ensuring proper alignment and spacing.
- Slide the chassis with the inner rails into the outer rails mounted on the rack until it locks securely.
Video 4.3: Detailed guide on how to install the sliding rail with the chassis and cabinet. This video is provided by CICHENG INC, a seller.
5. Istruzzjonijiet Operattivi
5.1 Tixgħel/Jitfi
Press the power button on the front panel to turn the server on. To power off, perform a graceful shutdown through the operating system, then press the power button if necessary.

Figure 5.1: Front panel of the RM21-304, highlighting power/reset buttons and USB ports.
5.2 Indikaturi LED
Il-pannell ta' quddiem għandu indikaturi LED għall-istatus tas-sistema:
- LED aħdar: Indikatur tal-qawwa.
- LED blu: Data activity indicator for drives.
- Other LEDs may indicate network activity or system warnings, depending on motherboard configuration.
Video 5.1: Explains the meaning of the Green LED (Power) and Blue LED (Data) indicators on the chassis. This video is provided by CICHENG INC, a seller.
6. Manutenzjoni
6.1 Tindif
Regularly clean the chassis exterior with a soft, dry cloth. For internal cleaning, disconnect power and use compressed air to remove dust from fans and components. Ensure all dust filters are clean to maintain optimal airflow.
6.2 Manutenzjoni tal-fann
The chassis features a fan assembly for cooling. Periodically check the fans for dust buildup and ensure they are spinning freely. Replace any noisy or malfunctioning fans promptly.

Figura 6.1: Intern view showing the fan assembly within the chassis.
7 Issolvi l-problemi
- Ebda Qawwa: Check all power connections, including the power supply unit (PSU) and wall outlet. Verify the power button is functioning.
- Is-Sistema Mhux Tibbutja: Ensure all internal components (motherboard, RAM, CPU, drives) are correctly seated and connected. Check for any POST error codes or beeps from the motherboard.
- Is-sħana żejda: Verify all fans are operational and free of obstructions. Ensure proper airflow within the rack and server room. Clean dust filters.
- Drive Detection Issues: Check SATA data and power connections to the drives. Ensure drives are properly seated in their trays.
8. Speċifikazzjonijiet
| Karatteristika | Dettall |
|---|---|
| Brand | SilverStone |
| Numru tal-Mudell | SST-RM21-304 |
| Fattur tal-Formola | 2U Rackmount |
| Dimensjonijiet (LxWxH) | 16.93 x 3.48 x 18.9 pulzieri |
| Piż | 21.5 liri |
| Materjal | Metall |
| Appoġġ tal-Motherboard | Mikro-ATX |
| Drive Bays | Compatible with 2.5" or 3.5" Drives |
| Appoġġ għall-Provvista tal-Enerġija | 2U Single/Redundant Server, PS2 (ATX) |
| Tkessiħ | Fan Assembly Included |
9. Garanzija u Appoġġ
For warranty information and technical support, please refer to the official SilverStone webis-sit jew ikkuntattja lid-dipartiment tas-servizz tal-konsumatur tagħhom. Żomm il-prova tax-xiri tiegħek għal talbiet ta’ garanzija.
Riżorsi onlajn:
- SilverStone Official Websit: www.silverstonetek.com
- Product Page (RM21-304): Paġna tal-Prodott tal-Amazon





