bb70e423_le_Intel__HM57_Express_Chipset__Benefit
[Feature] PCI Express* 2.0 interface [Benefit] 
Offers up to 2.5GT/s for fast access to peripheral devices and networking with up to 8 PCI Express 2.0 x1 ports, configurable as x2 and x4 depending on motherboard designs.
Mobile Intel® HM57 Express Chipset
Benefit