Check the listing for details. NEW Xi3 DIN Black Plastic Rail Mount For Xi3 Modular Mini Z3RO Computers. Condition: New. Listed at 24.49 USD. (1) Xi3 Black Plastic DIN Rail Mount. Manufacturer: Xi3. Mounts Xi3 Modular Computers on standard 35mm Top Hat DIN rails. Part: None. CDN Systems LLC, DBA Doug Deals, is not an authorized distributor or affiliated with the manufacturer of this product.