NM-B321 Motherboard 5B20P19442 for 320-15AST — Supports CPU A69225 A69220 A99420 A99425

Replacement NM-B321 mainboard, part number 5B20P19442, made for 320-15AST laptops. Compatible with processor models A69225, A69220, A99420 and A99425. Ideal as a direct swap for repairs or system rebuilds; retains original board layout and connector locations. Verify your model number before purchase to ensure compatibility.