RTC DS12887 Modulo di ricambio presa CR1220 per 486 Pentium DS12B887 BQ3287
Compatible with DS1287, DS12887, DS12B887. Also compatible with BQ3287 and OEC12C887 modules. Uses replaceable CR1220 coin cell battery. Eliminates issues caused by dead internal RTC batteries. Designed for 486 and early Pentium motherboards.