T-Mobile offers its factory-refurbished Jet 2.0 Mobile Broadband USB Adapter bundled with a $15 Prepaid Data Refill Card for $9.99 with free shipping. That's $11 less than the lowest total price we could find for the adapter alone elsewhere. Sales tax is added where applicable. The Jet 2.0 USB adapter provides mobile broadband Internet access to your laptop on T-Mobile's network. It also features a microSD card slot.