FOR NM-C821 5B20S44471 Motherboard for 15ADA05 — CPU R53500U L81W1 UMA 4G NT 3

Replacement computer motherboard model NM-C821 (P/N 5B20S44471) for 15ADA05 systems. Equipped with CPU R53500U and marked L81W1, this board features integrated UMA graphics and 4G memory support. Built to match the NT 3 configuration for direct compatibility with the 15ADA05 series.