Only tested to BIOS, so selling for parts or not working. Comes with I/O shield.

From TechPowerUp CPU Database:

The Intel Core 2 Quad Q9400 was a desktop processor with 4 cores, launched in August 2008. It is part of the Core 2 Quad lineup, using the Yorkfield architecture with Socket 775. Core 2 Quad Q9400 has 6 MB of L2 cache and operates at 2.666 GHz. Intel is making the Core 2 Quad Q9400 on a 45 nm production node using 456 million transistors. The multiplier is locked on Core 2 Quad Q9400, which limits its overclocking potential.

With a TDP of 95 W, the Core 2 Quad Q9400 consumes a good deal of power, so decent cooling is needed. Intel's processor supports DDR1, DDR2 and DDR3 memory with a dual-channel interface. For communication with other components in the system, Core 2 Quad Q9400 uses a PCI-Express Gen 2 connection. Although the processor doesn't come with integrated graphics, certain motherboards with compatible chipsets can provide this capability.

Hardware virtualization is available on the Core 2 Quad Q9400, which greatly improves virtual machine performance.

Asus P5G41T-M LX

Key Specifications:

Processor (CPU): LGA 775 socket for Intel® Core™2 Extreme / Core™2 Quad / Core™2 Duo / Pentium® Dual-Core / Celeron® Dual-Core / Celeron®.

Chipset: Intel® G41 / ICH7.

Memory (RAM): 2 x DIMM, Max. 8 GB, DDR3 1333(O.C.)/1066/800 MHz, Non-ECC, Un-buffered memory.

Graphics: Integrated Intel GMA X4500 (max. 1GB shared memory).

Expansion Slots: 1 x PCIe x16, 1 x PCIe x1, 2 x PCI slots.

Storage: 4 x SATA 3Gb/s ports, 1 x IDE connector.

LAN: Gigabit LAN.

Audio: 8-Channel High Definition Audio.

USB: 8 x USB 2.0 ports (4 on back panel, 4 via internal headers).

Form Factor: Micro ATX (24.4 cm x 20.1 cm).

Back Panel I/O: 1 x VGA, 1 x COM Port, 1 x Parallel Port, 1 x PS/2 Keyboard, 1 x PS/2 Mouse, 1 x RJ-45, Audio jacks.