Riser PCI-E 1x-16x guarantees more stable operation of mining rigs. It’s made of a PCI-E 16x (female) socket, a USB cable, a PCI-E 1x (male) socket, a PCI-E/SATA plug and a 6PIN plug, which allows you to connect additional power to the card. You can reduce the load on the motherboard and avoid blown tracks while many graphics cards are running simultaneously. It is the cheapest way to improve ventilation while allowing the use of all available PCI-E 1x sockets.