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This G3448A logic board is specially designed for Toshiba MQ01UBD100 series external hard drives. It is a direct replacement part for damaged or burned PCB, effectively solving problems such as no power, no recognition, and connection failure. Each board is fully tested before shipment. For correct recognition and data access, the original BIOS chip must be transplanted from your old PCB. Suitable for personal repair and professional data recovery use.