In 1989, IBM introduced its first portable personal system, under the name P70 386.
[['[TABLECONTEXT]', 'IBM_MODEL_NUMBER', '8573-031'], ['8573-031', 'YEAR', '1989'], ['8573-031', 'NAME', 'P70 386'], ['8573-031', 'CASE', 'portable'], ['[TABLECONTEXT]', '[TITLE]', 'IBM Personal System/2']]