i am a user of former products similar to this.the former one has 3 circles in the connector head cross section, this one has 2 circles. then it has no compatibility each other.i guess usb cables has just 5 pins (5 cores) and it's enough with 2 circles and center pin (every one circle touches twice). why the former products has 3 circles??it's sad that these has no compatibility with former cables but it's work well and good price.about the former one, the line up has 0.5m, 1m, 2m only. this one has 0.15m as new. i used to want to have a very short cable for my desk side and then i am happy for this.