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header-product PC Case be quiet! DARK BASE PRO 901 | Full Tower | Black
272.99 €

PC Case be quiet! DARK BASE PRO 901 | Full Tower | Black

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PC Case be quiet! DARK BASE PRO 901 Photo 1
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Short description

The be quiet! DARK BASE PRO 901 is a full tower PC case designed for optimal airflow and cooling. It features a bottom-mounted power supply, supports ATX and PS2 power supply form factors, and comes with two pre-installed 140 mm front fans. The case supports various fan sizes (120 mm and 140 mm) and HDD sizes (2.5", 3.5", 5.25"). With dimensions of 275 mm width, 604 mm depth, and 569 mm height, it provides ample space for high-performance components.
Available at price 272.99 €: 17 pcs.
Total available for order: 840 pcs.
Warranty: 2 Years
SKU: 10504157
Manufacturer: bequiet!
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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
12.10.2026 {{selectedOffer.officeDeliveryString}}
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Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
15.10.2026 {{selectedOffer.courierDeliveryString}}
From 8.13 € (Weight: 9.49 kg)
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From 1.99 €
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Product information

Description

The be quiet! DARK BASE PRO 901 is a Full Tower PC case engineered for high-performance builds that require efficient airflow and quiet operation. The case supports ATX, EATX, Micro ATX, Mini-ATX and XL-ATX motherboards, accommodates multiple drive sizes (2.5", 3.5", 5.25") and ships with two pre-installed 140 mm front fans. With a bottom-mounted power supply layout and a robust construction of aluminium, glass and steel, the DARK BASE PRO 901 provides spacious internal volume (275 mm width, 604 mm depth, 569 mm height) for large components and advanced cooling setups.

Advantages

The case combines versatile compatibility with a silent design, offering support for a wide range of fan sizes (120 mm and 140 mm) and multiple drive bays (two 3.5" and six 2.5" bays plus one 5.25" bay). Its solid materials and side window allow for durable build quality and component visibility while the included front 140 mm fans improve out-of-the-box airflow. The bottom-mounted PSU layout and support for ATX and PS2 power supply form factors simplify cable management and installation.

Suitable for

  • High-performance gaming PCs with large graphics cards
  • Workstations requiring multiple storage drives and expansion
  • Silent or quiet-focused builds using multiple fans or liquid cooling

Key specifications

  • Type: PC, Form factor: Full Tower
  • Supported motherboard form factors: ATX, EATX, Micro ATX, Mini-ATX, XL-ATX
  • Drive bays: 2 × 3.5", 6 × 2.5", 1 × 5.25"
  • Pre-installed fans: 2 × 140 mm front fans
  • Fan support: 120 mm and 140 mm sizes
  • Power supply: bottom-mounted (PSU not included), supports ATX and PS2
  • Materials: Aluminium, Glass, Steel
  • Dimensions (W×D×H): 275 × 604 × 569 mm; Weight: 16.3 kg
  • Colour: Black

How to use

Install the chosen motherboard according to its form factor (ATX/EATX/Micro ATX/Mini-ATX/XL-ATX) using the standoffs provided. Mount storage drives in the designated 3.5" and 2.5" bays and secure the 5.25" device if required. Fit the power supply in the bottom compartment and connect cables through the case grommets for tidy cable routing. Position additional fans or radiators in supported 120 mm or 140 mm locations as needed to achieve the desired cooling performance. Use the side window to monitor component layout and clearance during assembly.

Usage recommendations

For optimal quiet operation and airflow, keep cable routing tidy, use the included 140 mm front fans for intake, and configure additional exhaust or radiator fans to create a balanced airflow. Verify component clearances (GPU length, cooler height, radiator thickness) against the case dimensions before purchase.

Specifications

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.
1
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity:
4
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.
0
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.
1
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.
Full Tower
Supported HDD sizes: The size of the hard disk drives which can be used by the device.
5.25, 3.5, 2.5
Supported motherboard form factors: Design of the supported motherboards.
Micro ATX, EATX, ATX, Mini-ATX, XL-ATX
Product colour: The colour e.g. red, blue, green, black, white.
Black
All features

Packaging data

Package weight: Weight of the packaged product.
20800 g
Package height: The distance from the top to the bottom of the packaging.
684 mm
Package depth: The distance from the front to the back of the packaging.
633 mm
Package width: The distance from one side of the packaging to the other.
357 mm

Weight & dimensions

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.
16.3 kg
Height: The measurement of the product from head to foot or from base to top.
569 mm
Depth: The distance from the front to the back of something.
604 mm
Width: The measurement or extent of something from side to side.
275 mm

Technical details

Sustainability compliance:
Yes
Sustainability certificates:
Triman
Warranty period:
3 year(s)
Compliance certificates: Indicates which regulatory, safety, and environmental standards the product complies with, as verified by recognized authorities or certification bodies.
RoHS, UKCA, REACH, CE

Storage

Supported HDD sizes: The size of the hard disk drives which can be used by the device.
5.25, 3.5, 2.5

Cooling

Top radiator sizes supported:
360, 240, 120
Rear radiator sizes supported:
120, 140
Bottom radiator sizes supported:
140
Side radiator sizes supported:
360, 240, 120
Front radiator sizes supported:
420, 140, 120, 240, 280, 360
Fan speed:
0 - 1900
Maximum airflow:
78.4 cfm
Maximum air pressure:
2.36 mmH2O
Fan 2 maximum airflow:
78.4 cfm
Fan 2 maximum air pressure:
2.36 mmH2O
Bottom fans diameters supported:
140, 120
Number of bottom fans supported (max):
1
Top fans diameters supported:
140, 120
Number of top fans supported (max):
3
Rear fans diameters supported:
140, 120
Number of rear fans supported (max):
1
Rear fans installed:
1x 140 mm
Side fans diameters supported:
120
Number of side fans supported (max):
3
Front fans diameters supported:
120, 140
Number of front fans supported (max):
3
Front fans installed:
2x 140 mm
Fan speed control:
Yes

Ports & interfaces

Audio output: The type of audio output that the device produces, and the connector(s).
Yes
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:
4
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.
1
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.
0

Power supply

Supported power supply form factors:
ATX, PS2
Power supply location: Where the power supply is positioned.
Bottom
Power supply included: There is a power supply with this product.
No

Design

Maximum graphics card length:
495 mm
Maximum CPU cooler height:
190 mm
LED indicators:
Y
On/off button:
Yes
Anti-dust filter:
Yes
Illumination colour: The colour of the illumination, which is the light which allows you to see the display etc. clearly.
Multi
Illumination: The device has illumination.
Yes
Suitable for: Who can use the product, or what the product can be used for.
Gaming
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:
8
Number of 2.5" bays:
6
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.
1
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.
Micro ATX, EATX, ATX, Mini-ATX, XL-ATX
Product colour: The colour e.g. red, blue, green, black, white.
Black
Material: The material from which a thing is or can be made e.g. wood, plastic.
Aluminium, Glass, Steel
Type: Characteristics of the device.
PC
Form factor: The shape or design of the product.
Full Tower

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Product comparison

The be quiet! DARK BASE PRO 901 PC case is compared with similar alternatives from the same brand, including Pure Base 500DX, Pure Base 500 Window White, LIGHT BASE 900 FX, Dark Base 701, and Silent Base 802. All these cases are engineered for optimal airflow and cooling performance, but they differ in tower size, motherboard compatibility, internal expansion options, and front panel connectivity.

⚙️ The specifications comparison covers the form factor, supported motherboard types, optical drive bays, storage drive capacity, and front panel ports.

Parameterbe quiet! DARK BASE PRO 901be quiet! Pure Base 500DXbe quiet! Pure Base 500 Window Whitebe quiet! LIGHT BASE 900 FXbe quiet! Dark Base 701be quiet! Silent Base 802Practical significance
Form factorFull TowerMidi TowerMidi TowerFull TowerMidi TowerMidi TowerFull Tower cases offer maximum interior space for massive hardware and custom cooling loops, whereas Midi Tower cases take up less desk space.
Supported motherboardsMicro ATX, EATX, ATX, Mini-ATX, XL-ATXMini-ATX, Micro ATX, ATXMini-ITX, Mini-ATX, ATXXL-ATX, Mini-ITX, Micro ATX, EATX, ATXMini-ITX, Micro ATX, EATX, ATXMini-ITX, Micro ATX, EATX, ATXThe DARK BASE PRO 901 and LIGHT BASE 900 FX provide support for extra-large XL-ATX motherboards used in high-end workstations.
5.25" bays100000Only the DARK BASE PRO 901 retains an external bay for optical drives or hardware controllers.
USB Type-C ports110111Most models feature a convenient front-panel Type-C port, except for the Pure Base 500 Window White.
ColorBlackBlackWhiteBlackBlackBlackThe Pure Base 500 Window White offers a distinct white aesthetic for matching setups.

◎ The suitability and use cases comparison evaluates which model matches specific user requirements and system building goals.

Use caseRecommended productWhy
Maximum capacity and workstation builds with optical drivesbe quiet! DARK BASE PRO 901Provides a Full Tower design, widest motherboard compatibility, and a dedicated 5.25" bay.
Compact gaming setups with great airflowbe quiet! Pure Base 500DX or Pure Base 500 Window WhiteMidi Tower form factor fits standard components efficiently while saving space.
Showcase builds with extensive coolingbe quiet! LIGHT BASE 900 FXSpacious Full Tower layout with multiple pre-installed side and rear fans.
Versatile and quiet mid-sized PC buildsbe quiet! Silent Base 802 or Dark Base 701Deliver a balanced Midi Tower layout with ample room for storage and cooling upgrades.

The be quiet! DARK BASE PRO 901 stands out for its full tower capacity, support for XL-ATX motherboards, and a 5.25" drive bay, making it the ideal choice for high-end workstations and enthusiast builds that require maximum space and flexibility. If you are building a standard system without the need for massive motherboards or optical drives, the alternative midi tower cases offer a more compact footprint.

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Stock data
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WH113 17 12.10.2026
272.99 € Best price
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277.49 €
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290.99 €
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308.49 €
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415.49 €
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Customer reviews

Customer questions

FAQ

How much does the PC Case be quiet! DARK BASE PRO 901 cost, and is it available for purchase?

The price is 272.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 840 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 12.10.2026 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 PC Case be quiet! DARK BASE PRO 901 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 PC Case be quiet! DARK BASE PRO 901 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 bequiet! 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 bequiet! 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-c ports quantity, usb 3.2 gen 2 (3.1 gen 2) type-a 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 Case be quiet! DARK BASE PRO 901?

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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