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header-product Server case Silverstone RM21-304 Rack White
443.49 €

Server case Silverstone RM21-304 Rack White

Server case Silverstone RM21-304 Photo 1
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Server case Silverstone RM21-304 Photo 1
Server case Silverstone RM21-304 Photo 2
Server case Silverstone RM21-304 Photo 3
Server case Silverstone RM21-304 Photo 4
Server case Silverstone RM21-304 Photo 5
Server case Silverstone RM21-304 Photo 6
Server case Silverstone RM21-304 Photo 7
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Server case Silverstone RM21-304 Rack White

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Short description

The Silverstone RM21-304 Rack is a server case designed for rack mounting, featuring a sleek white finish. It supports HDD sizes of 2.5" and 3.5". With dimensions of 430 mm width, 480 mm depth, and 88.5 mm height, it offers a compact volume of 18.3 L, making it ideal for space-constrained environments. The robust design ensures durability and efficient cooling for your server components.
Available for order: 1 pcs.
Warranty: 2 Years
SKU: 3979484
Manufacturer: SILVERSTONE
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
29.10.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
03.11.2026 {{selectedOffer.courierDeliveryString}}
From 5.90 € (Weight: 6.30 kg)
Parcel couriers
Unisend LV / DPD Paku skapis / Latvijas Pasts nodaļa
03.11.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
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pay in 3 equal parts

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3 mth. × 147.83 €

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All payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment
36 months installment: from 12.32 euros per month
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Product information

Description

The Silverstone RM21-304 Rack White is a compact server case designed for rack mounting in space-constrained environments. Finished in white metal, it supports Mini-ITX and Micro ATX motherboards and accommodates one 3.5" drive bay and one 2.5" drive bay. With external dimensions of 430 mm width, 480 mm depth and 88.5 mm height, the chassis provides a small 18.3 L internal volume while offering a robust build and provisions for basic front I/O connectivity.

Advantages

This rack server case combines a compact footprint with metal construction for durability and stable component mounting. The white finish provides a neutral appearance suitable for professional equipment racks. Integrated front ports include one USB 2.0 and one USB 3.2 Gen 1 Type‑A for convenient access to peripherals and maintenance tasks. Support for both 2.5" and 3.5" drives enables flexible storage configurations, and compatibility with Mini‑ITX and Micro‑ATX motherboards allows selection of low-profile server or workstation components.

Suitable for (tasks / use cases)

  • Small server deployments in compact racks or wall-mounted enclosures
  • Edge computing and network appliances
  • Home or small office NAS and file servers
  • Laboratory or workshop test rigs requiring a rack form factor
  • Low-profile virtualization hosts or lightweight compute nodes

Key specifications

  • Form factor: Rack
  • Supported motherboard sizes: Mini-ITX, Micro ATX
  • Drive bays: one 3.5" bay, one 2.5" bay
  • External dimensions (W×D×H): 430 × 480 × 88.5 mm
  • Internal volume: 18.3 L
  • Front I/O: 1 × USB 2.0, 1 × USB 3.2 Gen 1 Type-A
  • Material: Metal
  • Color: White
  • Weight: 6.3 kg

How to use

Install a compatible Mini‑ITX or Micro‑ATX motherboard and secure it to the provided standoffs, then mount storage devices into the 3.5" and 2.5" bays using the appropriate screws or brackets. Connect front-panel USB and power/reset cables to the motherboard headers following the motherboard manual. Position the chassis in a standard 19" rack or compatible mounting rails; ensure clearance for airflow at the front and rear. Route power and network cabling to the rear I/O while keeping cables tidy to maintain airflow and ease of maintenance.

Usage recommendations

For reliable operation, use low-profile expansion cards and consider SSDs or enterprise 2.5" drives to reduce vibration and power consumption. Ensure the rack space provides adequate ventilation and, if needed, add case fans or rack cooling appropriate to your thermal load. Regularly check drive mounting and cable routing after transport or maintenance to preserve system stability.

Specifications

USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity:
0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity: Number of USB 3.1 (3.1 Gen 2) ports with Type-C connector. USB 3.1 (3.1 Gen 2) is USB interface version which supports transfer rate up to 10 Gbit/s (SuperSpeed+). USB Type-C connector has symmetrical design architecture and compatible with Thunderbolt 3 interface.
0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity:
1
USB 2.0 ports quantity: Number of USB 2.0 ports (connecting interfaces) in the device. USB 2.0 was released in April 2000 (now called "Hi-Speed"), adding higher maximum signaling rate of 480 Mbit/s (effective throughput up to 35 MB/s or 280 Mbit/s), USB 2.0 ports are usually black.
1
Number of 5.25" bays: A drive bay is a standard-area for adding hardware to a computer. Most drive bays are fixed to the inside of a case, but some can be removed. A 5.25" drive bay, also known as full-height bays, were found in old PCs in the early to mid-1980s. They were 3¼″ high by 5¾″ wide, and up to 8″ deep (83 × 146 × 200 mm), used mainly for hard disks and floppy disk drives.
0
Number of 3.5" bays: A drive bay is a standard-area for adding hardware to a computer. Most drive bays are fixed to the inside of a case, but some can be removed. A 3.5" drive bay is for floppy disks.
1
Type: Characteristics of the device.
Server
Form factor: The shape or design of the product.
Rack
Supported HDD sizes: The size of the hard disk drives which can be used by the device.
3.5, 2.5
Supported motherboard form factors: Design of the supported motherboards.
Mini-ITX, Micro ATX
Product colour: The colour e.g. red, blue, green, black, white.
White
All features

Other features

Volume: The amount of a substance contained.
18.3 L

Weight & dimensions

Material thickness:
1 mm
Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
6.3 kg
Height: The measurement of the product from head to foot or from base to top.
88.5 mm
Depth: The distance from the front to the back of something.
480 mm
Width: The measurement or extent of something from side to side.
430 mm

Storage

Hot-swap:
Yes
Supported HDD sizes: The size of the hard disk drives which can be used by the device.
3.5, 2.5

Ports & interfaces

USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity:
0
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity: Number of USB 3.1 (3.1 Gen 2) ports with Type-C connector. USB 3.1 (3.1 Gen 2) is USB interface version which supports transfer rate up to 10 Gbit/s (SuperSpeed+). USB Type-C connector has symmetrical design architecture and compatible with Thunderbolt 3 interface.
0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity:
1
USB 2.0 ports quantity: Number of USB 2.0 ports (connecting interfaces) in the device. USB 2.0 was released in April 2000 (now called "Hi-Speed"), adding higher maximum signaling rate of 480 Mbit/s (effective throughput up to 35 MB/s or 280 Mbit/s), USB 2.0 ports are usually black.
1

Design

Maximum CPU cooler height:
68 mm
Reset button:
Yes
On/off button:
Yes
Rack capacity: The spase that device fill in rack.
2U
Rack mounting: The type of mounting that can position devices in a shelving system (rack).
Yes
Number of expansion slots:
4
Number of internal 3.5" bays:
1
Number of 2.5" bays:
1
Number of 5.25" bays: A drive bay is a standard-area for adding hardware to a computer. Most drive bays are fixed to the inside of a case, but some can be removed. A 5.25" drive bay, also known as full-height bays, were found in old PCs in the early to mid-1980s. They were 3¼″ high by 5¾″ wide, and up to 8″ deep (83 × 146 × 200 mm), used mainly for hard disks and floppy disk drives.
0
Number of 3.5" bays: A drive bay is a standard-area for adding hardware to a computer. Most drive bays are fixed to the inside of a case, but some can be removed. A 3.5" drive bay is for floppy disks.
1
Supported motherboard form factors: Design of the supported motherboards.
Mini-ITX, Micro ATX
Product colour: The colour e.g. red, blue, green, black, white.
White
Material: The material from which a thing is or can be made e.g. wood, plastic.
Metal
Type: Characteristics of the device.
Server
Form factor: The shape or design of the product.
Rack

Description

Machine translation.

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Customer reviews

Customer questions

FAQ

How much does the Server case Silverstone RM21-304 cost, and is it available for purchase?

The price is 443.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 29.10.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

Can Server case Silverstone RM21-304 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Server case Silverstone RM21-304 online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All SILVERSTONE products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized SILVERSTONE service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: usb 3.2 gen 2 (3.1 gen 2) type-a ports quantity, usb 3.2 gen 2 (3.1 gen 2) type-c ports quantity, usb 3.2 gen 1 (3.1 gen 1) type-a ports quantity, usb 2.0 ports quantity, number of 5.25" bays, number of 3.5" bays, type, form factor, supported hdd sizes, supported motherboard form factors, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.
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14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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