Motherboard 531990-001 (DDR3) for 8100 / 8180 — Compatible with 505799-001 & 505800-001

Replacement DDR3 mainboard designed for use in 8100 and 8180 systems. This board corresponds to part numbers 531990-001, 505799-001 and 505800-001, making it a direct swap for those original components. Ideal for repairing or refurbishing affected machines—confirm compatibility with your chassis and connectors before installation.