Xerox 840 Accessories – we offer 3 of them. Did you know that we offer free shipping on ALL our products? Retrevo has the largest collection of Xerox 840 Printer accessories – choose from 1 840 Printer Toner, 2 840 Printer Ink. With guaranteed compatibility and a 30-day return policy, you can shop with confidence. Not looking for Printer accessories for Xerox 840? Retrevo has the largest collection of Xerox Printer Accessories.