# System planar board Lenovo 5B21J76669 motherboard replacement part

**URL:** https://aio.lv/en/product--lenovo-5b21j76669--10770457
**Data updated:** 2026-02-12 22:07 (EET)
**Category:** Motherboards
**Manufacturer:** Lenovo
**Manufacturer code:** 5B21J76669
**EAN:** 5715063164198
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 444.99 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 367.76 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lenovo-5b21j76669--10770457

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Lenovo system planar board 5B21J76669 is a replacement motherboard module designed for compatible Lenovo laptop or desktop models. It serves as the main circuit board connecting CPU, memory, storage and peripherals. Use it to repair or upgrade a device, restore functionality after hardware failure, and ensure proper component communication and power distribution.

## Long description

Lenovo system planar board 5B21J76669 is a replacement motherboard module intended for compatible Lenovo laptop or desktop models. It functions as the main circuit board that connects the processor, memory, storage devices and peripheral interfaces, providing signal routing and power distribution required for the system to operate. This board is intended for repair and upgrade operations where the existing motherboard is faulty or needs replacement to restore device functionality.
Advantages
This replacement motherboard delivers original-equipment-level compatibility with supported Lenovo systems, enabling correct component communication and reliable power delivery. Using a direct motherboard replacement reduces diagnostic time compared with modular repairs and helps restore system stability when faults are related to board-level defects. The planar board's standard connector arrangement and mounting points allow straightforward mechanical and electrical integration in compatible chassis.
Suitable for
 Repairing a Lenovo laptop or desktop with a failed or damaged motherboard
 Replacing a board to restore boot, power management or peripheral connectivity
 Refurbishment and parts replacement in service workshops
 Upgrading a device by replacing a defective mainboard to return to factory functionality
Key specifications
 Mainboard form factor and mounting compatible with specific Lenovo models
 On-board connectors for CPU socket or soldered processor, memory slots or SODIMM connectors depending on model variant
 Integrated power distribution circuits and voltage regulation modules for system components
 Standard peripheral interfaces including SATA/PCIe lanes, USB headers and display connectors as provided by the original design
How to use
Before installation, confirm device compatibility and back up all user data. Power down the device, remove the battery and disconnect all power sources. Follow the service manual for the specific Lenovo model to access the mainboard area, remove heat sinks, cables and attached modules as required, and note connector locations. Replace the faulty board with the replacement, reconnect all cables and components, reassemble the chassis and perform a power-on test. After initial boot, verify memory recognition, storage detection and peripheral operation, and update firmware or drivers if necessary.
Usage recommendations
Handle the planar board using appropriate electrostatic discharge (ESD) precautions, use proper tools for connector and screw removal, and consult Lenovo service documentation for torque and reassembly sequence. If uncertain about compatibility or installation, seek professional repair services to avoid accidental damage to surrounding components.

## FAQ

### How much does the Lenovo motherboard 5B21J76669 cost, and is it available for purchase?

The price is 444.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 13.07.2026 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. 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

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