Garantia: 3 ANIOSESPECIFICACIONES DE HARDWARE: MODELOS COMPATIBLES 22 SERIES:DS1522+ 21 SERIES:DS1821+, DS1621XS+, DS1621+, DVA3221 20 SERIES:DS1520+, DS920+, DS720+ 19 SERIES:DS1819+, DS1019+, DVA3219 18 SERIES:DS1618+, DS918+, DS718+, NVR1218