Specification: Product name: PCI-E 1X To 16X Adapter Color: Blue Onboard interface: 1 * USB 3.0 Type-A, 4 * 4P power supply, 4 * PCI-E 16X card slot Compatible slot: PCI-E 1X, PCI-E 2X, PCI-E 4X, PCI-E 8X, PCI-E 16X Power supply cable: Big 4Pin to SATA 15Pin USB cable length: 60cm / 24in Transfer data speed: 5Gbps (theoretical) Expander Board dimensions: 12 * 6.6 * 2.1cm / 4.7 * 2.6 * 0.8in(L * W * H) PCI-E Card dimensions: 17.6 * 15 * 1.9cm / 6.9 * 5.9 * 0.7in(L * W * H) Item weight: Approx. 227g / 8oz Package dimensions: 22 * 15 * 6cm / 8.7 * 5.9 * 2.4in(L * W * H) Package weight: 311g / 11oz The PCI-E expansion riser card adapter is designed to convert 1 PCI-E 1X slot into 4 PCI-E 16X slots. The 4 PCI-E 16X slots could connect sound card, graphics card and network card simultaneously and work in an independent non-interfering way. It is the perfect and practical solution to instantly expand PCI-E slots in crowded systems or on the motherboards with limited PCI-E ports. Features: 1-slot PCI-E 1X to 4 slots 16X riser card with high speed USB 3.0 cable. Simultaneously support 4 PCI-E 16X devices, non-interference. Customized for mining BTC. 2 layers PCB board design. Compliant with PCI express 2.0 & 1.1 specification. Solid capacitors supply stable power delivery. Reduced burden on the motherboard by simultaneous power supply from big 4Pin and SATA slots. Easy installation, fully plug and play, convenient and efficient.