The 2 Parallel Printer ports are capable of supporting multiple print jobs from multiple computers in a network and sending them to the shared printers, while Bi-Directional capability allows the printers to send feedback back to the computers through the same network. While this technology has experienced a drop in popularity, there the EFSP42 sees additional usefulness as a device to unite both older printers and newer ones on the same network. As a hub, it also allows users to create a home or work network between multiple computers. Because it has been noted to experience difficulties when processing print jobs of large sizes, the EFSP42 is recommended for a small home or office network with standard printing demands. Purchase of the Linksys EFSP42 includes a 3 Year Limited Warranty.