Sony Vaio Vpc-Ea A1794331A Motherboard System Pull. Guaranteed for 90 days. Genuine part. Sony Sony VAIO VPCEA MBX-223 Intel Laptop Motherboard s989 Parts can usually not be interchanged - please check to make sure that your original part has this part number or that the manufacturer recommends this replacement part for your system. sony vaio vpcea mbx 223 intel laptop motherboard s989 a1794331a