Dell E210882 Motherboard with Intel mPGA478/mPGA478B Socket, in excellent condition, pulled from a working Dell machine. Wikipedia lists the following processors for the socket: Pentium 4 (1.4–3.4 GHz); Celeron (1.7–2.8 GHz); Celeron D (2.13–3.2 GHz); Pentium 4 Extreme Edition (3.2–3.4 GHz)