Kingwin PCI-Express 16x Riser Card Extension Cable (PCI-05) Flexible ribbon riser card extension cable No Driver Necessary Good for mounting PCI Express Cards for Bitcoin/Lite coin Mining Ensure proper airflow in your system by creating more room in tight-fit cases Install PCI-E device freely according to dimension and position of computer case. Flexible ribbon riser card extension cable No Driver Necessary Good for mounting PCI Express Cards for Bitcoin/Litecoin Mining Ensure proper airflow in your system by creating more room in tight-fit cases Install PCI-E device freely according to dimension and position of computer case. Ideal for small computer & server cases, like 1U & 2U One end is PCI-E 16X male , another end PCI-E 16x female