[Huawei MediaPad, T-Mobile SpringBoard] kaefert:
Hi there! I wanted to try out your App. I'm in the possession of those two USB-LAN-adapters:

With this one your helper tells me that no USB-Ethernet adapter can be found, log:

D/USB2EthernetHelper(16880): +++ ON CREATE +++
D/USB2EthernetHelper(16880): +++ Called onResume! +++
I/ActivityManager( 566): Displayed de.df.usbethernethelper/.USB2EthernetHelper: +246ms
D/USB2Ethernet-Service(16880): About to handle intent: Intent { cmp=de.df.usbethernethelper/.USB2EthernetHelperService }
D/USB2EthernetHelper(16880): Shared prefs key: SU binary installed?_feedb
I/CmdRunner(16880): Running command: id
D/su (21112): su invoked.
D/su (21113): db allowed
I/CmdRunner(16880): Running command: id
I/USB2Ethernet-Service(16880): Capable to SU? true
D/su (21120): su invoked.
D/su (21121): db allowed
D/USB2EthernetHelper(16880): Shared prefs key: SU binary installed?_feedb
D/USB2EthernetHelper(16880): Shared prefs key: SU binary installed?
D/USB2EthernetHelper(16880): Shared prefs key: Host and ethernet adapter up and running?_feedb
D/AndroidRuntime(21114):
D/AndroidRuntime(21114): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
D/AndroidRuntime(21114): CheckJNI is OFF
D/dalvikvm(21114): Trying to load lib libjavacore.so 0x0
D/dalvikvm(21114): Added shared lib libjavacore.so 0x0
D/dalvikvm(21114): Trying to load lib libnativehelper.so 0x0
D/dalvikvm(21114): Added shared lib libnativehelper.so 0x0
D/AndroidRuntime(21122):
D/AndroidRuntime(21122): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
D/AndroidRuntime(21122): CheckJNI is OFF
D/dalvikvm(21122): Trying to load lib libjavacore.so 0x0
D/dalvikvm(21122): Added shared lib libjavacore.so 0x0
D/dalvikvm(21122): Trying to load lib libnativehelper.so 0x0
D/dalvikvm(21122): Added shared lib libnativehelper.so 0x0
D/AndroidRuntime(21114): Calling main entry com.android.commands.am.Am
D/dalvikvm(21114): Note: class Landroid/app/ActivityManagerNative; has 158 unimplemented (abstract) methods
D/AndroidRuntime(21122): Calling main entry com.android.commands.am.Am
D/dalvikvm(21122): Note: class Landroid/app/ActivityManagerNative; has 158 unimplemented (abstract) methods
I/USB2Ethernet-Service(16880): ProdID: 0002
I/USB2Ethernet-Service(16880): ProdID: 7E2B
I/USB2Ethernet-Service(16880): ProdID: 0002
I/USB2Ethernet-Service(16880): ProdID: 9048
D/USB2EthernetHelper(16880): Shared prefs key: Host and ethernet adapter up and running?
D/USB2EthernetHelper(16880): Shared prefs key: Host and ethernet adapter up and running?_feedb
E/USB2Ethernet-Service(16880): Service thread finishes with failure.
D/WiFiText( 1036): RSSI changed
D/WiFiText( 1036): RSSI changed
I/USB2EthernetHelper(16880): Stopping service.
I/USB2EthernetHelper(16880): Stopping alarm.
D/USB2Ethernet-Service(16880): +++ USB2EthernetHelperService Destroy called +++
D/USB2EthernetHelper(16880): +++ Called onPause! +++
D/USB2EthernetHelper(16880): +++ onDestroy called +++

This one is detected by your app, but insmod fails I think (step: "load appropiate driver")

D/USB2EthernetHelper(16880): +++ ON CREATE +++
D/USB2EthernetHelper(16880): +++ Called onResume! +++
I/ActivityManager( 566): Displayed de.df.usbethernethelper/.USB2EthernetHelper: +272ms
D/USB2Ethernet-Service(16880): About to handle intent: Intent { cmp=de.df.usbethernethelper/.USB2EthernetHelperService }
D/dalvikvm( 1036): GC_FOR_ALLOC freed 13379K, 35% free 30226K/46032K, paused 73ms, total 73ms
D/USB2EthernetHelper(16880): Shared prefs key: SU binary installed?_feedb
I/CmdRunner(16880): Running command: id
D/su (19242): su invoked.
D/su (19245): db allowed
I/CmdRunner(16880): Running command: id
D/su (19251): db allowed
D/su (19249): su invoked.
I/USB2Ethernet-Service(16880): Capable to SU? true
D/USB2EthernetHelper(16880): Shared prefs key: SU binary installed?_feedb
D/USB2EthernetHelper(16880): Shared prefs key: SU binary installed?
D/AndroidRuntime(19252):
D/AndroidRuntime(19252): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
D/AndroidRuntime(19252): CheckJNI is OFF
D/USB2EthernetHelper(16880): Shared prefs key: Host and ethernet adapter up and running?_feedb
D/dalvikvm(19252): Trying to load lib libjavacore.so 0x0
D/dalvikvm(19252): Added shared lib libjavacore.so 0x0
D/dalvikvm(19252): Trying to load lib libnativehelper.so 0x0
D/dalvikvm(19252): Added shared lib libnativehelper.so 0x0
D/AndroidRuntime(19246):
D/AndroidRuntime(19246): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<
D/AndroidRuntime(19246): CheckJNI is OFF
D/dalvikvm(19246): Trying to load lib libjavacore.so 0x0
D/dalvikvm(19246): Added shared lib libjavacore.so 0x0
D/dalvikvm(19246): Trying to load lib libnativehelper.so 0x0
D/dalvikvm(19246): Added shared lib libnativehelper.so 0x0
D/AndroidRuntime(19252): Calling main entry com.android.commands.am.Am
D/dalvikvm(19252): Note: class Landroid/app/ActivityManagerNative; has 158 unimplemented (abstract) methods
D/AndroidRuntime(19246): Calling main entry com.android.commands.am.Am
D/dalvikvm(19246): Note: class Landroid/app/ActivityManagerNative; has 158 unimplemented (abstract) methods
I/USB2Ethernet-Service(16880): ProdID: 0002
I/USB2Ethernet-Service(16880): ProdID: 1780
D/USB2EthernetHelper(16880): Shared prefs key: Host and ethernet adapter up and running?
D/USB2EthernetHelper(16880): Shared prefs key: Host and ethernet adapter up and running?_feedb
I/USB2Ethernet-Service(16880): Delete existing asset 'asix_s730x.ko'...
I/USB2Ethernet-Service(16880): Copy asset 'asix_s730x.ko'...
D/dalvikvm(19252): GC_CONCURRENT freed 93K, 16% free 512K/608K, paused 0ms+0ms, total 2ms
I/USB2Ethernet-Service(16880): Delete existing asset 'usbnet.ko'...
I/USB2Ethernet-Service(16880): Copy asset 'usbnet.ko'...
I/USB2Ethernet-Service(16880): All assets copied successfully.
I/CmdRunner(16880): Running command: /system/bin/insmod /sdcard/data/usb2ethernethelper/asix_s730x.ko
D/su (19289): su invoked.
D/su (19290): db allowed
I/USB2Ethernet-Service(16880): result insmod: false
E/USB2Ethernet-Service(16880): insmod: init_module '/sdcard/data/usb2ethernethelper/asix_s730x.ko' failed (Exec format error)
E/USB2Ethernet-Service(16880): Service thread finishes with failure.
D/USB2EthernetHelper(16880): Shared prefs key: Load appropriate driver_feedb
D/USB2EthernetHelper(16880): Shared prefs key: insmod
D/USB2EthernetHelper(16880): Shared prefs key: Load appropriate driver_feedb
I/USB2EthernetHelper(16880): Stopping service.
I/USB2EthernetHelper(16880): Stopping alarm.
D/USB2Ethernet-Service(16880): +++ USB2EthernetHelperService Destroy called +++
D/USB2EthernetHelper(16880): +++ Called onPause! +++
D/USB2EthernetHelper(16880): +++ onDestroy called +++

I've tried this with my Sony Xperia Z running a custom ROM (PAC)