There are several differences between the WF-3540 and the WF-3520 all-in-one printer. The Epson WF-3540 offers 3.5″ touchscreen with gesture navigation, while the WF-3520 only use the 2.5″ LCD with touch panel. The WF-3540 also features dual paper trays (500-sheet capacity) that allow you to print or copy continuously at full speed without interruption and it has a WiFi direct for connectivity; meanwhile the WF-3520 only has 250-sheet paper capacity and without a WiFi direct.
The WF-3520 and Epson WF-3540 offers the same features for print, copy, and scan. They support mobile printing from smartphones, tablets and more; also supports Apple AirPrint and Google Cloud Print. These printers also have automatic 2-sided printing plus a 30-page duplex Auto Document Feeder and they can use Extra High-capacity inks.
Difference between Epson 127 and 126
What is the difference between Epson 126 vs 127 ink cartridges? The 127 is an extra high-capacity ink cartridge with yields about 945 pages (black) and 755 pages per color (cyan, magenta, yellow). In the other hand, the 126 is a high-capacity ink cartridge with yields about 385 pages (black) and 470 pages per color (cyan, magenta, yellow).
Driver and manual for WF-3520 and WF-3540
Epson WorkForce WF-3520 Inkjet Printer for Business
Epson WorkForce WF-3540 Inkjet Printer for Business
To see Epson’s video tutorial click here
Source: epson, youtube