This is the only way I know stick that is compatible with T-Mobile SIM cards and Snow Leopard. I have an iPhone MultiSIM map and the Web n 'Walk Stick III ran with the software option is not more than an hour until the entire system has crashed. This worked here right away without any problems and you have even configure the settings nothing. The installation under Snow was done in a few seconds and extremely easy. Haptically very nice.
The software (XSManager) is easy to use and works perfectly.
Who needs a "free" (without Sim or Netlock) Stick the Windows (XP, Vista, 7) and Mac OS (10.6) works will not find anything better.