The BEYIMEI 4 x PCI-E 1X to 16X Riser Card kit includes everything needed to expand your computer's capabilities. With a bundle of adapter boxes, cards, a USB 3.0 extension cable, and a SATA power cord, this set allows for easy setup and connectivity. The 2-foot cable length provides ample reach for connecting peripherals, making it convenient for any computer setup. Made in China, this product ensures quality and reliability for your computing needs.