Always verify your Device ID in Windows Device Manager (Right-click device > Properties > Details > Hardware Ids). If you see USB\VID_XXXX&PID_XXXX matching known e-ul100 patterns, you are in the right place.
Did the device come with a specific on the casing? e-ul100 z12011 driver download
(often identified by model numbers like Z12011), you generally need the Realtek RTL8152 chipset drivers Always verify your Device ID in Windows Device
You will see a value that looks something like this: USB\VID_0BDA&PID_8176 (Note: This is an example ID for a Realtek RTL8188CUS Wi-Fi chip). e-ul100 z12011 driver download