Install PCI-E 16X device to PCI-E 1X slot freely according to dimension and position of computer case. Ideal for small computer & server case, like 1U & 2U. One end is PCI-E 16X female and another end is PCI-E 1X male. Package content: 1X Brand New PCI-E 16X to 1X Adapter Riser Card Flexible Extension Cable.