Features: 100% brand new and high quality Using high quality PCB board, high temperature resistance. 7 Slots brings great extendability PCI-E slot power solution, no extra power cable needed Easy and convenient to settle and install Long term use without deformation to ensure lonf0term stability. Adopting gold immersion technology , good conductivity, anti-oxidation, ensuring good contact and inproving data transmission rate. Package Includes: 1 PC x 1 to 7 PCI E Riser Card Specifications: Material: metal + plastic Bus port: PCI-E 1x Number of ports: 7 x USB3 0 Main chip: ASM1187E Supported operating systems: for DOS, for Linux, for Windows XP / 7 / 8 / 10 Product size: approx 122x 120 x 70mm/4.8x4.72x2.75in Package weight: 130g note: This extension is applicable to the mainboard PCI - E 1X slot, Please plug in the power cord for the floppy. When plug PCI - E extension must be computer broken wires plug again. The form a complete set of wire rod is customized, never grab line to plug in. Remember that When plug wire must identify the direction, not to counter or offset, prevent burning equipment, plug wire when the socket of equipment first, then plug wire, avoid too hard plug socket pin is broken. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you Please allow 1-2cm measuring deviation due to manual measurement.