# Computer case Chieftec BU-12B-300 Small Form Factor Black

**URL:** https://aio.lv/en/product--chieftec-bu-12b-300--3589414
**Data updated:** 2026-01-13 17:44 (EET)
**Category:** Computer Cases
**Manufacturer:** CHIEFTEC
**Manufacturer code:** BU-12B-300
**EAN:** 0753263077158
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 79.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 66.11 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--chieftec-bu-12b-300--3589414

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

The Chieftec BU-12B-300 is a compact Small Form Factor (SFF) PC case in black, featuring a 300 W power supply. It supports HDD sizes of 2.5" and 3.5", and has front fan support for 80 mm diameters. With dimensions of 92.5 mm width, 290 mm depth, and 280 mm height, this case is ideal for space-saving builds while providing essential cooling and power capabilities.

## Long description

The Chieftec BU-12B-300 Small Form Factor Black is a compact PC case designed for space-conscious builds. It comes with an included 300 W power supply and supports Mini-ITX motherboards, one 3.5" drive bay and one 5.25" bay. The case accepts both 2.5" and 3.5" storage drives and provides front fan support for an 80 mm fan diameter. With overall dimensions of 92.5 mm width, 290 mm depth and 280 mm height and a SECC steel construction, the BU-12B-300 delivers a small footprint with basic cooling and power features.
Advantages
The case combines a compact Small Form Factor layout with an integrated 300 W power supply, reducing the need to source a separate PSU. Support for Mini-ITX motherboards and both 2.5" and 3.5" drives allows flexible storage configurations. Two front USB 3.2 Gen 1 Type-A ports provide modern connectivity for external devices. SECC material and a 3.55 kg weight offer a sturdy chassis while keeping the overall package lightweight for easy placement.
Suitable for
Home or office PCs where desk or shelf space is limited
Mini-ITX based workstation or HTPC builds
Systems requiring an included 300 W power supply for low- to mid-power components
Storage-focused builds using one 3.5" HDD plus one or more 2.5" drives
Key specifications
Form factor: Small Form Factor (SFF)
Supported motherboard: Mini-ITX
Included power supply: 300 W
Drive bays: 1 × 3.5" bay, 1 × 5.25" bay; supports 2.5" and 3.5" drives
Front fan support: 80 mm diameter
Front I/O: 2 × USB 3.2 Gen 1 (Type-A)
Material: SECC steel
Product colour: Black
Dimensions (W×D×H): 92.5 × 290 × 280 mm
Weight: 3.55 kg
How to use
Install a Mini-ITX motherboard inside the chassis and secure it to the standoffs. Mount the included 300 W power supply in its designated compartment and connect power cables to the motherboard, storage devices and any front I/O. Fit 3.5" or 2.5" drives into the available bays and attach the front USB 3.2 Gen 1 connectors to the motherboard header or internal adapter as required. If additional airflow is needed, install an 80 mm front fan in the supported position and ensure cable routing does not impede air paths.
Usage recommendations
For stable operation, pair the BU-12B-300 with low- to mid-power Mini-ITX components and a single discrete storage configuration. Maintain at least one intake or exhaust 80 mm fan for enhanced airflow if your component temperatures approach manufacturer limits. Use 2.5" SSDs to reduce noise and improve thermal performance when space is constrained.

## Specifications

### Design

| Feature | Value |
|---|---|
| Type | PC |
| Form factor | Small Form Factor (SFF) |
| Supported motherboard form factors | Mini-ITX |
| Number of 3.5" bays | 1 |
| Number of 5.25" bays | 1 |
| Side window | No |
| Material | SECC |
| Product colour | Black |
| Suitable for | Home/Office |
| Number of internal 3.5" bays | 1 |
| Maximum CPU cooler height | 65 mm |
| Maximum graphics card length | 150 mm |
| Number of expansion slots | 2 |
| Number of external 5.25" bays | 1 |
| On/off button | Yes |

### Power supply

| Feature | Value |
|---|---|
| Power supply | 300 W |
| Power supply included | Yes |

### Ports & interfaces

| Feature | Value |
|---|---|
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| Audio input | Yes |
| Audio output | Yes |

### Cooling

| Feature | Value |
|---|---|
| Number of front fans supported (max) | 1 |
| Front fans diameters supported | 80 |

### Storage

| Feature | Value |
|---|---|
| Supported HDD sizes | 2.5, 3.5 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Material thickness | 0.5 mm |
| Weight | 3.55 kg |
| Height | 280 mm |
| Width | 92.5 mm |
| Depth | 290 mm |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 84733080 |

## FAQ

### How much does the Computer case Chieftec BU-12B-300 cost, and is it available for purchase?

The price is 79.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 511 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 01.07.2026 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 Computer case Chieftec BU-12B-300 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 CHIEFTEC 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 CHIEFTEC 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. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: type, form factor, number of 3.5" bays, number of 5.25" bays, side window, power supply, power supply included, usb 2.0 ports quantity, usb 3.2 gen 1 (3.1 gen 1) type-a ports quantity, weight, supported motherboard form factors, material, 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.

## Image

https://aio.lv/img/cache/product/3589414/64932824_large.webp