If you are uncertain of your product part number, please check the part number label on the back of the package. The part number label is as the following.
If your package is lost, please refer to the E-Catalogue of products and search for the part number of the product you bought. If you have any further questions, please contact Silicon Power customer service center via e-mail : service@silicon-power.com or phone call: 1-510-490-1885.