Sprint is offering free unlimited 4G LTE to people who own specific Snapdragon-powered PCs for the rest of the year. The promotion will help out users who have one of the first “Always Connected” Windows PCs, which normally require paid data plans, as spotted by Engadget.

People who buy either the HP Envy x2, the Lenovo Miix 630, or the Asus NovaGo can get free LTE from Sprint, which lasts until December 31st this year. After this year, the data plan will cost either $5 (with auto pay) or $15 per month unless you cancel it. A data connection is one of the big selling points for these devices, and Sprint is clearly hoping that after several months of service, owners will find it valuable enough to start paying.

These devices aren’t sold by Sprint itself, so you’re going to have to buy them yourself and switch to the carrier to get the deal. That means you’ll have to get a SIM card either online, in store, or get it shipped with the PC and then manually activate the free LTE.

Sprint isn’t the only carrier that’s tried this promotional strategy. Back in 2014, T-Mobile offered 1GB of free tablet data until the end of the year for anyone who switched to it. Sprint also tried a similar ploy last year when it offered unlimited data for people to switch to its mobile services.