# Motherboard Lenovo 5B21U33755 for Lenovo systems — OEM replacement board

**URL:** https://aio.lv/en/product--lenovo-5b21u33755--12240760
**Data updated:** 2026-03-30 12:55 (EEST)
**Category:** Motherboards
**Manufacturer:** Lenovo
**Manufacturer code:** 5B21U33755
**EAN:** 5715328242111
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 172.99 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 142.97 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lenovo-5b21u33755--12240760

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Replacement motherboard Lenovo 5B21U33755 compatible with Lenovo systems. This OEM board is intended as a direct hardware replacement for compatible Lenovo desktops or laptops (model compatibility must be verified). Use it to restore system functionality after failure or for repairs. Handle and install according to manufacturer service instructions; check connectors and BIOS compatibility before installation.

## Long description

Replacement motherboard Lenovo 5B21U33755 is an OEM mainboard designed for use in compatible Lenovo systems. It serves as a direct hardware replacement to restore system functionality after component failure or during repair and refurbishment. The board should be verified for model compatibility and installed following manufacturer service instructions to ensure connector alignment and BIOS compatibility.
Advantages
This Lenovo OEM motherboard provides a factory-compatible option for repairs, reducing downtime by replacing a faulty mainboard with an original-design component. Using an OEM board preserves system compatibility with existing chassis layout, power connectors and integrated interfaces when the board matches the target model. The board can help maintain original performance characteristics and firmware support compared with non‑OEM alternatives when correct BIOS/firmware versions are used.
Suitable for
Repairing Lenovo desktops or laptops where the original mainboard has failed
Refurbishment projects that require an OEM mainboard replacement
Service centers performing hardware diagnostics and component swaps
Restoring systems to factory-compatible hardware configuration
Key specifications
Form factor and connector layout designed for compatible Lenovo models
Integrated chipset and on-board interfaces corresponding to original system design
Support for manufacturer firmware and BIOS when matched to model
On-board ports and internal headers compatible with Lenovo chassis and power delivery
OEM quality and manufacturing standard for direct replacement use
How to use
Before installation, verify that this motherboard is compatible with the target Lenovo model and that any required BIOS or firmware versions are available. Power down the system, disconnect all cables and ground yourself to prevent electrostatic discharge. Remove the failed board following the manufacturer’s service manual, transfer any required modules or heat sinks, then install the replacement ensuring all connectors, mounting points and standoffs align correctly. Reconnect peripherals and power, then enter BIOS or firmware setup to confirm device recognition and apply any necessary configuration or firmware updates.
Usage recommendations
Handle the board by its edges, avoid touching exposed circuitry, and perform installation in a static-safe environment. Verify driver and BIOS compatibility for the specific Lenovo system before placing the unit into service. If uncertain about compatibility or procedures, refer to official Lenovo service documentation or consult an authorized service technician.

## FAQ

### How much does the Lenovo motherboard 5B21U33755 cost, and is it available for purchase?

The price is 172.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 16.07.2026 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: Cash payment, 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 Lenovo 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 Lenovo 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

## Image

https://aio.lv/img/cache/product/12240760/68120323_large.webp