Special Order: PCI EXPRESS 64P(2.3)(G/F)BLACK Connector System: Board-to-Board Number of Positions: 64 PCI Generation: 2 & 3 Centerline (Pitch): .039 in Centerline (Pitch): 1 mm Board-to-Board 64 2 & 3 .039" | Pci & Pci Express (Pcie) Connector | Part Number: 2-1775801-1 | Internal Number: 2-1775801-1 | .039" | TE Connectivity