StoneTaskin 02DL815 5B20V81852 For Lenovo ThinkPad E490 E590 MB NM-B911 I3 I5 I7 RX550 2GB Fully Tested 100% work Free Shipping

StoneTaskin is one of the leading brands of laptop computers and server parts in China. Established in 2008, we have extensive experience in working with customers from different regions and providing them with the parts they need. Our product range includes motherboards, keyboards, batteries, adaptors, HDD SSD, RAM, daughter boards, and more. We are committed to providing our customers with the highest quality products and services at the most competitive prices. Our team of experienced professionals is dedicated to providing the best possible solutions for our customers.

▲ Page-listed stock quantities are for reference only. Due to platform constraints, full inventory availability cannot be displayed.

▲ We maintain ample stock to fulfill bulk and high-volume orders.

▲ For bulk purchases, wholesale partnerships, or custom requirements, feel free to contact our support team—we’re pleased to offer competitive pricing and exclusive discounts

▲ Expedited Shipping (FedEx/DHL/TNT/UPS): 3–8 business days to the US; 5–12 business days to other countries.

▲ Economy Shipping (Post/Airmail): 7–12 business days to the US; 20–35 business days to the UK & Australia; 20–50 business days to other countries.

▲ These are estimated delivery times under normal circumstances. However, international shipments may be subject to courier service disruptions and local customs/duty procedures.

▲ We do not ship to P.O. Boxes or APO/FPO addresses.

▲ Please ensure your shipping address is accurate, complete, and detailed.

▲ We also recommend providing a valid phone number for easy contact by delivery personnel upon arrival—your number will not be used for any other purposes.

▲ Orders will be dispatched within 1–3 business days of payment receipt or clearance.

▲ Please contact us if you have not received your package within 30 business days.

▲ If defective, damaged, or incorrect products are received, please contact us immediately. Returns are accepted within 30 calendar days of the delivery date, and items must be in original new condition. We strictly follow eBay platform policies and will cover the cost if the issue is on our side.

▲ Customer satisfaction is our top priority. All items are guaranteed to be new, fully functional, and quality-inspected before shipment.

▲ If you have any questions, please contact us first. We will do our best to offer satisfactory resolutions.

There are some common questions customers asked,I really hope it can help you.

1.Q:What's about the motherboard's compatibility?

  A:We promise that it can be compatible perfectly if you provide the correct information of Motherboard,such as the laptop model and the part number of Motherboard.Please confirm it.

2.Q:This item is not the motherboard what I want,Do you have XXXX Motherboard in stock?

   A:We are a professional store of Motherboard,with most of the Motherboards in stock.No matter what you want,we can provide the best one for you.

3.Q:This CPU is not I want,Can you give me other choice?(i3,i5ori7 Intel or AMD. GM OR PM of Video card)

   A:In general,we are in stock.If not, we will also do our best to find for you.Just contact us.

4.Q:I am a trader, do you offer the trade price?

   A:Absolutely! As a professional wholesale supplier, we’re pleased to offer competitive wholesale pricing for bulk orders.