Specification: Item Type: Computer Chassis Front Panel Board Size: Approx. 78.4 x 24mm / 3.1 x 0.9in Transmission Method: USB3.0/2.0 Audio Driver: AC'97 and HD Length: Approx. 55cm / 21.7in Package List: 1 x Computer Chassis Front Panel Note: 1. Wire color and audio interface color are random 2. The board size is 78.4mmx24mm. This USB is non-standard customized and is not suitable for the corresponding chassis on the market.