Cmos bios battery 3 volt - 2 pin plug that is fitted underneath the motherboard chassis casing (taped on the board and fastened to the RTC 2 pin connector) This cmos bios battery (RTC Battery) is for YLOD problems (Yellow Light of Death ) for Dell Alienware Alpha R1 Intel Mainboard S115x Dh81m01 3V3TG for use on Dell motherboard D07U Steam Machine i3 i5 i7 Windows 10 and Dell Alienware Alpha R1 i3, i5, i7 Windows or Steam Machine OS ROG (republic of gaming- Steam OS) consoles /desktop ASM100 ASM100-980, ASM100-1580, ASM100‑2980BLK, ASM100-4980BLK, ASM100-6980BLK, ASM- i7 - 1TB, The RTC Battery requires a cable with a 2 pin flat plug with 3 volt performance status level. Note: This is not for Dell Alienware Alpha R2 Mini PC, or Steam Machine R2 Series. If you are in need for the RTC Battery that solve the Flashing Yellow Lights (YLOD) on a Alienware Alpha R2 / Steam Machine R2, its on another of our eCRATER listings: 222437809186
