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header-product PC Tower ENDORFY Signum 300 Air Black 3x120mm Fans 360mm Radiator

PC Tower ENDORFY Signum 300 Air Black 3x120mm Fans 360mm Radiator

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Short description

The ENDORFY Signum 300 Air Tower in Black features a sleek design with 3x120mm front fans and 1x120mm rear fan. It supports 120, 240, and 360mm front radiators and accommodates 2.5 and 3.5" HDD sizes. With dimensions of 413mm width, 216mm depth, and 447mm height, it offers ample space for cooling and storage.
Warranty: 2 Years
SKU: 5856638
Manufacturer: SilentiumPC
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Product information

Description

Signum 300 Air is a mid-tower PC case in black with a tempered glass side panel that provides a clear view of internal components. The chassis supports ATX, Micro-ATX and Mini-ITX motherboards and offers space for up to two 3.5" drives and two 2.5" drives. The case supports long GPU cards (up to 350 mm), tall CPU coolers and multiple cooling options including front radiators up to 360 mm. The package includes four Stratus 120 PWM ARGB fans and the design allows up to eight fans in total.

Advantages

The Signum 300 Air combines a roomy interior with broad cooling compatibility, including support for 120/240/360 mm front radiators and up to eight fan mounts. A tempered glass side panel offers component visibility while the included Stratus 120 PWM ARGB fans provide PWM speed control and long-life fluid dynamic bearings for quiet, efficient airflow. The case fits a variety of storage configurations and common motherboard sizes, making it flexible for gaming, content creation and general-purpose builds.

Suitable for

  • Gaming PC builds with large graphics cards and advanced cooling
  • Home or small office workstations that require quiet cooling
  • Content-creation rigs with multiple drives and tall CPU coolers

Key specifications

  • Form factor: Tower (mid-tower)
  • Supported motherboards: ATX, Micro-ATX, Mini-ITX
  • Drive bays: 2 × 3.5" + 2 × 2.5" (or 4 × 2.5" equivalent)
  • Included fans: 4 × Stratus 120 PWM ARGB; total fan mounts up to 8
  • Radiator support: front up to 360 mm (also supports 120 mm and 240 mm)
  • Maximum GPU length: 350 mm
  • Side panel: tempered glass
  • Front I/O: 2 × USB 2.0
  • Power supply: not included
  • Colour: Black
  • Dimensions (approx.): Width 216 mm × Depth 413 mm × Height 447 mm

How to use

Install the compatible motherboard (ATX, Micro-ATX or Mini-ITX) on the standoffs, mount the power supply in the designated bay and secure drives in the 3.5" or 2.5" trays. Fit the graphics card (up to 350 mm) in the PCIe slots and install a CPU cooler that fits the available height. Connect the included Stratus 120 PWM ARGB fans to appropriate headers or a controller and route cables to maintain unobstructed airflow. If you plan to use a front radiator, confirm clearance for the chosen radiator thickness and fan configuration before final assembly.

Usage recommendations

For balanced noise and cooling performance, use the PWM fan headers to set a curve that increases fan speed under higher CPU/GPU load. When installing multiple drives or a 360 mm radiator, plan cable routing and component placement to avoid blocking front airflow and ensure optimal intake through the front fan mounts.

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:
0
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.
2
Power supply included: There is a power supply with this product.
No
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.
2
Type: Characteristics of the device.
PC
Form factor: The shape or design of the product.
Tower
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, ATX
Product colour: The colour e.g. red, blue, green, black, white.
Black
All features

Weight & dimensions

Height: The measurement of the product from head to foot or from base to top.
447 mm
Depth: The distance from the front to the back of something.
216 mm
Width: The measurement or extent of something from side to side.
413 mm

Storage

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

Cooling

Top radiator sizes supported:
240, 120
Rear radiator sizes supported:
120
Front radiator sizes supported:
120, 240, 360
Rear fans installed:
1x 120 mm
Front fans installed:
3x 120 mm

Ports & interfaces

Audio input: The type of audio input that the device requires, and the connection needed.
Yes
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:
0
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.
2

Power supply

Power supply included: There is a power supply with this product.
No

Design

Maximum PSU length:
180 mm
Maximum graphics card length:
350 mm
Maximum CPU cooler height:
161 mm
Reset button:
Yes
On/off button:
Yes
Anti-dust filter:
Yes
Tempered glass panel(s):
Yes
Side window: A side window is a transparent side (or part of side) in a housing which enables you to see the internal space of the device.
Yes
Number of expansion slots:
7
Number of 2.5" bays:
2
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.
2
Supported motherboard form factors: Design of the supported motherboards.
Mini-ITX, Micro ATX, ATX
Product colour: The colour e.g. red, blue, green, black, white.
Black
Type: Characteristics of the device.
PC
Form factor: The shape or design of the product.
Tower

Description

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Customer questions

FAQ

What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

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 SilentiumPC 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 SilentiumPC 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, power supply included, 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.

Where can I download the instructions for PC Tower ENDORFY Signum 300 Air Black?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
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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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