The cmos bios battery being offered here are based on a 3 volt 210mah rating system board need, where what is required is a cable and 3 pin plug. The 3 pin plug is a molex panelmount 1.25mm type (panelmount housing) that is fitted to a receptacle on the system board for it's integration. The renewal or replacement process might be something that can be somewhat challenging depending on the specific model of notebook, yet in most cases technical manuals will allow the scope of it's replacement process and allow owners to replace and renew the cmos battery. If in doubt, please ask us to assist or redirect you to that source help. Model integration of this cmos bios battery (RTC Battery) are for Dell E4200 E4300 Studio 14, 14z, 1440, 1440-PP40L and notebooks and requires a cable with a 3 pin molex panelmount plug. (not OEM P571D, rather a Compatible Model)
