[Question] Abit IP35 Pro supports CrossFireX technology?

Hi, I have an abit IP35 Pro motherboard and I would like to know if it supports Crossfire. I would like to make a Crossfire with two AMD Radeon HD6850.

The motherboard has 2 PCI-E slots, one with 16x bandwidth and another with 4x bandwidth

Another question, what is the function of ATX4P1 connector on the motherboard?

Thanks :)

My System Specs:
Abit IP35 Pro V1.1
Intel Core 2 Duo E8400 with OC (3.6Ghz BIOS And 3.8Ghz with UGuru Profile)
HIS Radeon HD6850 1GB
8GB RAM 2x4GB (CL-5-5-5-15)
Windows 7 Ultimate x64
Case CaseCom Uranus 9939

1) Yes, Crossfire is fully supported with this board. Cards should work no problem
2) The ATX4P1 connector is just to provide extra power to the PCI-E cards should they need it. I don't have it plugged in on mine, and everything works just fine however.