CompuParts Solutions Inc. Genuine OEM laptop & computer parts · Doral, Florida · Serving buyers since 2004 Ships within 2 business days
30-day returns VISIT OUR STOREOTHER ITEMSCONTACT USresponse 5B21C74703 Lenovo Intel N4000 4GB 32GB Motherboard 81MB 300E CHROMEBOOK 2ND GEN Part Number 5B21C74703 · Lenovo · Condition: Open Box ✔ 100% Genuine OEM part — we never sell aftermarket copies or compatibles. Part Number5B21C74703 BrandLenovo CategoryMotherboards › System Boards CPU Type N4000 CPU Brand Intel Celeron Integrated RAM 4GB Integrated eMMC 32GB CPU Chip SR3S1 Printed MPN BM5866 V1.4 Condition Open Box — new, unused genuine OEM part. Pulled from new equipment or supplied in bulk/non-retail packaging; fully tested before shipping. Compatible Models
Please match the part number on your original part before ordering — several models use more than one version of this part. Message us with your service tag / serial number if you are not sure.
Lenovo 300e Chromebook 2nd Gen
81MB0004US Shipping
- Ships from our warehouse in Doral, Florida (USA) — never drop-shipped.
- Ships within 2 business days (Mon–Fri) — most orders go out the same or next day.
- Free USPS Ground Advantage shipping on every order — typically 2–5 business days within the US. Tracking number provided.
- Every part is inspected and packed in anti-static, padded packaging.
Returns & Warranty
- 30-day returns from the delivery date, full refund to your original payment method.
- Request an RMA through Messages before shipping anything back — we reply within 1 business day with the RMA number and instructions. Returns without an RMA cannot be accepted.
- Every part ships with a tamper-evident serial label. To be eligible for return the label must be intact, and the part must be in its original, unmodified condition (no bent pins, cracks, burns, liquid damage, soldering or other alterations), with the original anti-static packaging.
- Defective on arrival or failed under normal use? We pay the return shipping and refund or replace at your choice.
- Wrong part ordered, no longer needed, or did not fix the problem? Return shipping is paid by the buyer. Message us with your model or service tag before buying if you are unsure.
- Refunds are issued within 3–5 business days after the return is received and inspected.
About Us
CompuParts Solutions Inc. has supplied laptop and computer parts to technicians, businesses and consumers from Doral, Florida since 2004. Every part we sell is a genuine OEM part — pulled from original equipment or sourced from the manufacturer, tested, and serial-tracked. Over 225,000 items sold on with 99.5% positive response. Questions? Message us through — we reply within one business day.
© 2026 CompuParts Solutions Inc. · Doral, FL 33172 SKU 5B21C74703
