The picture below shows the board running Dual ATI Radeon HD 4850 graphics card in a CrossFire setup.

A look at the ASRock P45R2000-WiFi, you can see the similarities with the P43 board. The major difference is probably a 2nd PCIe slot. On the top left, there are 3 PCI, 2 PCIx16 (dual 8x in CF), 2 PCIe x1 slots. Next to it is a 24 pin+4 pin power connector. At the right hand corner are two orange SATA ports (to be connected to left most ports on the PCB for eSATA). The two PCIe GbE controllers are located right behind the green and blue slots. At the centre of the board is the peddle switch which you will enable a PCIe x16 (green) or a Dual PCIe x 8 (blue+green).

At the bottom of the board is the USB external, Firewire external connectors. There are 6 SATAII ports with 4 in red, 2 in orange. the 2 orange connectors are meant for connecting to the right most orange connectors for eSATA use. Next to it is the ICH10R south bridge.

To the right is the DIMM slots, 4 DDR3 and 2 DDR2 slots which must be used exclusively.