Main board description：

Compatible models：FOR INSPIRON 15R 5520  7520

Spare part number：CN-06D5DG  CN-04P57C

Main board number：LA-8241P

Warranty：90days

matters needing attention：

How to buy the right product

1.Please check the motherboard, spare part number, picture

2.If you can’t confirm, you can provide a picture of your old motherboard

After-sales service

1.We will 100% test the goods that occur, if you encounter problems, please let me know

2.If you can’t solve the problem by yourself in the end, we can support the return and refund. If you need to return the motherboard, we will refund the full amount.

3.Please do not buy the wrong product, so you will bear all shipping and service charges

shipment

The seller recommend the AliExpress Standard Shipping

If you want fast shipping order, please choose the DHL EMS

Full test: yes

Conditions: 100% work,

Warranty period: 90 days

We guarantee that all products will be tested and in good condition before shipment.

Precautions after mainboard replacement

1. Ensure to install CMOS battery (battery standard voltage 3.3V)

2. The first time you turn on the machine, it will automatically restart once without displaying, wait for about 10 seconds (or the yellow light flashes), press and hold the key for 5 seconds to force the machine to shut down, and then turn on the machine again, it will automatically restart 3-5 times and display normally (do not unplug the power).

3. If the charger is not the original charger, the battery will not charge when entering the system.

4. The fan rotates at high speed, press FN+X (press before entering the system)

5. Machines of more than five generations must be equipped with low-voltage memory to display. PC3L should note that the low-voltage memory with L is the low-voltage memory.