This cmos rtc battery is a replacement for Acer Travelmate 8471 small form factor single board computing (this rtc cmos battery provides is a voltage source to the eprom that holds the firmware to the motherboard) (not OEM, rather Compatible Model), (not OEM, rather Compatible Model), though it's not being listed for other variation model needs. 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 2 pin plug. The 2 pin plug is a molex picoblade 1.25mm type (Picoblade housing) that is fitted to a receptacle on the system board for it's integration.