Function 1: pci express multiplierFunction 2: riser pci express x16Function 3: miningFunction 4: bitcoin minerFunction 5: riserFunction: pcie riserFunction: riser pcie x16Type: PCI-E RiserModel Number: PCI Express MultiplierMaterial: plasticcolour: blackPackage Contents:1 x PCIE Riser CardOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.