If you're printing from a mobile device, you'll need an OTG cable and a dedicated app (not available on the Play Store, so download carefully from the official site). Step 2: Installation Guide
Open the .dmg file and run the installation package.
Since Easy Print doesn't always maintain a public FTP server, email the seller you bought it from (Amazon, eBay, Alibaba). Ask for the "ES9930U 64-bit Windows driver." Reputable sellers keep a cloud link (Google Drive/Dropbox) for their buyers.
