Suitable for people with many SIM cards to backup and modify information. User will be able to copy the content of one SIM card to another. Support GSM / CDMA. Features: Read, edit, backup your telephone directory and SMS for your GSM / CDMA SIM. Leisurely sort, batch modify phone directory and SMS Ideal for portable use on the road or at home by just USB connection to desktop or laptop. Remove SIM card from your phone and place in the card reader for full access to your info on your PC. Ability to copy the content from one SIM card to another. Back up several SIM cards to one location. Load information from your PC to your SIM card. No batteries needed reader draws power from the USB connection. Support : Windows 98/me/2000/XP (As for Windows7 : please use "PL-2303" driver) Package Content: 1 x USB SIM Card Reader 1 x CD Driver (Note 1 : Photo attached is for reference only, it may be slightly varied in items of colour, shape from the actual item delivered from time to time Note 2 : This product is not 100% compatible with all sim cards (Generation 5 Sim Card Can not Be Decoded)