Hello @GMShafiulIslam ,

Welcome to our community.

One important thing to note first: the UE300C is designed to support Windows 11/10/8.1/8, macOS, iPadOS, Chrome OS, and Linux OS with Plug & Play functionality. Android is not listed as a supported operating system, which may be the primary reason the adapter is not functioning on your Samsung Galaxy A17 5G.

That said, here are a few things you can check:
1. Verify Android compatibility: Some Android devices do support USB-C Ethernet adapters through native Android drivers, but this varies by device and Android version. Check your phone's official specs or Samsung's support page to see if wired Ethernet via USB-C is supported.
2. Check USB port version: Many Android phones use USB-C connectors but internally support only USB 2.0, which can sometimes cause connectivity issues with certain adapters.
3. Try the adapter on a supported device: Connect the UE300C to a PC or laptop running Windows or macOS to confirm the adapter itself is functioning correctly.
4. Driver availability: If your device requires a driver, you can check the TP-Link Download Center at https://www.tp-link.com/support/download/ — search for the UE300C, select your hardware version, and look under the Driver section.

If the adapter works fine on a PC but not on your phone, it is likely a compatibility limitation with Android.