You will typically find three file categories:

Sewoo does not always provide native PostScript or AirPrint drivers. Instead, they offer:

Sewoo is gradually adopting and Apple AirPrint for newer models. However, as of 2025, the SLK-TS400 still requires a native driver for full cutter, peeler, and sensor control. The good news: Sewoo provides a virtual COM port driver (VCP) that makes USB appear as a classic serial port, allowing legacy DOS or Unix applications to print without modification.