You can download the official drivers directly from the manufacturer's support pages. The following resources are verified for the ES-9910UB and related models:
: Access the dedicated driver repository at easyprinterthailand.com/driveres9930u (this page often hosts drivers for the entire ES-99xx series, including the ES-9910UB). es9910ub driver hot download
Try a different USB port (preferably USB 2.0, not 3.0). Also check the USB cable – many ES9910UB devices have poor soldering. You can download the official drivers directly from
Modern drivers fix bugs that can cause audio drops, clicks, pops, or unexpected hardware disconnection. Securing the "Hot Download" es9910ub driver hot download