High gold plating: strong oxidation resistance, good conductivity and wear resistance. 4-layer circuit board: It has very strong anti-interference ability, effectively ensuring the stability of PCI-E high-speed signal transmission, data integrity and impedance matching. The bottom of the product is reinforced to protect the product from deformation. Multi-system compatibility, compatible with XP,Vista, 7 (drivers need to be installed), 8, 10 system comes with drivers. Use steps:Step 1: Plug in the wire first. : Install the expansion card plugged in with wires to the motherboard. Matters needing attention: electrostatic protection Solder pins, parts and gold fingers of products are all conductive parts and connected to the main control chip. When touching by hand, the static electricity of human body be conducted to the main control chip through the conductive parts, which may cause the main control to be damaged by static . Anti-static measures: 1. Electrostatic discharge of human body (touch large metal objects and wash hands). 2. Wear plastic gloves. 3. If you are holding the product without gloves, try not to touch the conductive parts of the product. If there are plastic parts on the product, you can hold the plastic parts, or hold the parts on both sides of the PCB. Product: M.2 PCI e to USB3TYPE -E&C 19/20P interface expansion card Type: PH69 Input: M.2 M Key Compatibility: USB2.0, USB1. 1 Product weight: 40G Product size: 80x22MM Colour:As Shown Material:PC+metal Package Contents: 1 x Expansion adapter card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.