# PC Case CHIEFTEC BS-20B-OP Midi Tower, black, microATX/Mini-ITX, 2x 3.5", max GPU 27 cm, 1x 5.25" bay, USB-C

**URL:** https://aio.lv/en/product--chieftec-bs-20b-op--11407537
**Data updated:** 2026-01-21 11:10 (EET)
**Category:** Computer Cases
**Manufacturer:** CHIEFTEC
**Manufacturer code:** BS-20B-OP
**EAN:** 0753263078889
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 58.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 48.34 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--chieftec-bs-20b-op--11407537

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Thursday | free |
| Pickup points | 25.06.2026 | 1.99 EUR |
| Courier delivery to door | 25.06.2026 | 5.10 EUR |

## Summary description

CHIEFTEC BS-20B-OP is a compact Midi Tower PC case for microATX and Mini-ITX builds. It supports up to 27 cm graphics cards, CPU coolers up to 143 mm, two 3.5" drives and one external 5.25" bay. Front panel includes USB 3.2 Gen 2 Type-C, USB 3.2 Gen 1 Type-A and audio I/O. One 90 mm rear fan is preinstalled; front and rear each support one fan. Kensington cable lock slot and 0.8 mm steel construction provide basic security and durability.

## Long description

The PC Case Chieftec Midi Tower BS-20B-OP Black is a compact mid-tower enclosure designed to house Mini-ITX and Micro ATX systems while maintaining efficient airflow. Finished in black, the case offers support for multiple drive sizes including 2.5", 3.5" and 5.25" devices, and accepts an ATX power supply (power supply not included). The chassis includes a preinstalled rear 90 mm fan and provisions for additional front cooling, permitting balanced ventilation in a small footprint of 170 mm (W) x 329 mm (D) x 408 mm (H).
Advantages
The BS-20B-OP provides a space-efficient layout suitable for compact builds without sacrificing drive flexibility or ventilation options. Its support for several HDD/SSD sizes and a 5.25" bay allows for optical drives or other front-mounted devices. The included rear 90 mm fan and capacity for front fans improve heat dissipation for typical home or office configurations. USB connectivity on the front panel offers convenient access for peripherals.
Suitable for
 Home or office compact desktop builds with Mini-ITX or Micro ATX motherboards
 Systems requiring multiple internal drives (2.5" and 3.5") and an optional 5.25" device
 Basic gaming or multimedia PCs where airflow and a small footprint are priorities
 Upgrades or replacements for small form-factor cases that need ATX power supply compatibility
Key specifications
 Form factor: Midi Tower compatible with Mini-ITX and Micro ATX motherboards
 External dimensions (W × D × H): 170 mm × 329 mm × 408 mm
 Weight: 4.49 kg
 Drive bays: support for 2 × 3.5" bays and 2.5" drives plus 1 × 5.25" bay
 Cooling: 1 × rear 90 mm fan preinstalled; supports additional front fans (80 mm)
 Front panel connectivity: 1 × USB 3.2 Gen 1 (Type-A) port
 Power supply: ATX power supply compatible (not included)
 Colour: Black
How to use
Install a compatible Mini-ITX or Micro ATX motherboard inside the case and secure it to the standoffs provided. Mount the ATX power supply in the designated compartment and route power cables to the motherboard and drives. Fit 3.5" and 2.5" drives into the appropriate bays and install any 5.25" device into the front bay if required. Connect the front-panel USB port and any case fan headers to the motherboard for power and control. Ensure the preinstalled rear 90 mm fan is connected and that any additional front fans are oriented for optimal airflow.
Usage recommendations
For reliable thermal performance, maintain unobstructed airflow by keeping cable routing tidy and installing at least one front intake fan if the system will host higher-heat components. Use a quality ATX power supply sized to your component needs and verify drive mounting screws are secured to prevent vibration. Regularly clean dust from fan intakes and filters to preserve cooling efficiency.

## Specifications

### Design

| Feature | Value |
|---|---|
| Type | PC |
| Form factor | Midi Tower |
| Supported motherboard form factors | Mini-ITX, Micro ATX |
| Number of 3.5" bays | 2 |
| Product colour | Black |
| Suitable for | Home/Office |
| Number of internal 3.5" bays | 2 |
| Maximum CPU cooler height | 143 mm |
| Maximum graphics card length | 270 mm |
| Number of expansion slots | 4 |
| Number of external 5.25" bays | 1 |
| Cable lock slot | Yes |
| Cable lock slot type | Kensington |
| Tempered glass panel(s) | No |

### Power supply

| Feature | Value |
|---|---|
| Power supply included | No |
| Supported power supply form factors | ATX |

### Ports & interfaces

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

### Cooling

| Feature | Value |
|---|---|
| Number of front fans supported (max) | 1 |
| Front fans diameters supported | 80 |
| Rear fans diameters supported | 90 |
| Number of rear fans supported (max) | 1 |
| Rear fans installed | 1x 90 mm |

### Storage

| Feature | Value |
|---|---|
| Supported HDD sizes | 2.5, 3.5, 5.25 |

### Technical details

| Feature | Value |
|---|---|
| Warranty period | 2 year(s) |

### Weight & dimensions

| Feature | Value |
|---|---|
| Material thickness | 0.8 mm |
| Weight | 4.49 kg |
| Height | 408 mm |
| Width | 170 mm |
| Depth | 329 mm |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 5160 g |

## FAQ

### How much does the CHIEFTEC BS-20B-OP PC Case Midi Tower cost, and is it available for purchase?

The price is 58.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 17 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 Thursday 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. 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 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, power supply included, usb 3.2 gen 1 (3.1 gen 1) type-a ports quantity, weight, 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.

## Image

https://aio.lv/img/cache/product/11407537/66195830_large.webp