You can mount this adapter under the console on the back of the cover marked serial port 2 to run the homemade software serial port SD memory card adapter. Featuring a plug-and-play design, this card reader adaptor case with precision holes is easy to use, lightweight and convenient, and offers security protection. It is constructed of ABS material. The length of this product is 5.1cm, the width is 4cm and the height is 2cm. It is suitable for GameCube Controller. Item Name: Card Reader Adapter Material: ABS Suitable: for GameCube Controller Features: Safety Protection, Precise Hole Positioning, Plug And Play Size Details: L: 5.1cm/2.01", W: 4cm/1.57", H: 2cm/0.79" (Approx.) Notes: Before purchasing please ensure that your game host has a serial port 2 and that you are able to run the latest software as described above. (for GameCube XENO). Due to the light and screen setting difference, the item's colour may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Card Reader Adapter