This printer fits both the SAM4s SPS-530RT and the 530FT. This is a thermal printer which accepts 3 1/8th" thermal paper rolls. This part does not include the auto cutter so either re-use your old one or also order a new auto cutter too.
This printer is pretty easy to install. If you have any concerns installing you can have us do it, please call us at 1-800-863-2274 to discuss your options.
Here is a link to the Auto Cutter for the SAM4s SPS-530
As always please remember to unplug your register before replacing parts and it is a goof idea to back up your program before unplugging or replacing parts.