Officejet 8720, 8725, 8728, 8730 differences - HP Support

8728UDP on port 8728 thinks that error checking and correction is not necessary or performed in the application, avoiding the overhead of such processing at the networkIT8728F Datasheet - Environment Control ( EC-LPC IO ) - ITE, IT8728F pdf, IT8728F pinout, data, IT8728F circuit, temperature, IT8728F schematic, driver.