Installation of 'USB 2.0 10/100M Ethernet Adapter' (model QTS1081B 9700) (Corechip RD9700) in Apple macOS High Sierra

How To Use A Generic USB Ethernet Adapter RD9700 On Mac OS X 20 February 2016 macOS Zahid The generic USB Ethernet Adapter equivalent to Apple’s pricey £25 option is called the RD9700.

Installation guide for an inexpensive ($2 on eBay, shipped) unbranded 'USB 2.0 10/100M Ethernet Adapter' model QTS1081B 9700 (RD9700 chip by Corechip) in Apple macOS High Sierra (10.13.6) (tested in 2017 Macbook Air). Included driver files were provided on the installation CD included with the adapter.

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1) Disabling SIP (System Integrity Protection)

From the menu bar, select '' (Apple symbol), then 'Restart'.
As soon as the screen becomes black, hold down 'Command' and 'R' until the Apple logo and a progress bar appear.
Wait for the computer to boot into recovery mode.
From the menu bar, select 'Utilities' and then “Terminal”.
In the terminal, type: csrutil disable, press Return.
From the menu bar, select '' (Apple symbol), then 'Restart'.

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2) Installing driver

Execute file 'RD9700 Mac OS 10.10 Driver.pkg' from the directory 'RD9700Driver/MAC DRIVER', by double clicking on it.
Installer window will appear.
Proceed with the installation.
Once installation application has finished, the application window should state: 'The installation was successful. The software was installed.'.
Click on 'Close'.
Kernel extension files should have been copied to directory '/System/Library/Extensions/RD9700.kext'.

3) Enabling SIP (System Integrity Protection)

From the menu bar, select '' (Apple symbol), then 'Restart'.
As soon as the screen becomes black, hold down 'Command' and 'R' until the Apple logo and a progress bar appear.
Wait for the computer to boot into recovery mode.
From the menu bar, select 'Utilities' and then “Terminal”.
In the terminal, type: csrutil enable, press Return key.
From the menu bar, select '' (Apple symbol), then 'Restart'.

4) Verifying adapter is recognized by the system (optional step)

From the menu bar, select '', select 'About This Mac' -> click 'System Report' -> select 'Hardware' -> select 'USB' -> select 'USB 3.0 Bus' -> select 'USB 2.0 10/100M Ethernet Adaptor'.
An example of a configuration:

5) Adding network interface

NOTE: The USB adapter will not show up in the list of network interfaces if it is not plugged in the USB port (it's not relevant, if the ethernet cable is plugged in or if it is 'live').

From the menu bar, select '' (Apple symbol) -> 'System Preferences' -> 'Network' -> '+' (to add service) -> select 'USB 2.0 10/100M Ethernet Adaptor' -> click 'Create'.
The new adapter should be added to the list in the window on the left. If the ethernet cable is not inserted into the adapter or if it is not live, the status will state 'Not Connected'. If ethernet cable is connected and 'live', the status should be 'Connected'.
From here, network specific options should be configured (such as: automatic configuration of IPv4 with DHCP, etc.) as per user's need - as in the examples below.
NOTE: This interface gets assigned a random MAC address. The reported USB connection throughput is 12 Mbps (USB 1.1, not (advertised) USB 2.0 speeds), thus data throughputs will be in the 600-700 KiB/s range.

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Update: This trick also works with macOS High Sierra.

If you bought a cheap USB 2.0 to Ethernet adapter for your MacBook Air or MacBook Pro 13 inch 2015, then you know the simple plug and play does not work. Surely all the 3rd party adapters available on the Eaby are guaranteed to be functional.

Before starting banging your head check if the device is detected by your laptop. Go to About this Mac then check USB tab in system report.

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If you see something like the above picture we are ready to go, otherwise get the cable replaced or get a new one. In my case, I had to purchase three adapters to get one functional.

After reading lots of how-to tutorials regarding this issue with Mac OS El Captain and Yosemite I came to know the problem have something to do with SIP (System Integrity Protection). So without wasting time, I disabled it and restarted the machine. With full excitement, I went to network preferences and clicked the + button, but there was no USB Ethernet interface listed. If you want to give it a try, follow the steps mentioned below.

How to Disable System Integrity Protection in Mac OS:

• Restart your laptop and wait till the keyboard and display become completely black. Press and hold down command(⌘) + R button to start recovery mode.
• Open terminal from “Utilities” option.
• Type csrutil disable and restart the device.
• Now open Network from System Preferences and click on + button.
• If you see a new networking interface like USB 2.0 to 10/100M Ethernet select and start using the internet.

For those, the fix as mentioned above does not work, use the following method.

Enable Ethernet Adaptor on macOS 10.12 Sierra:

• First, disable the SIP if not done already. As most of the generic adapter comes with ASIX chip, you can download the Mac OS drivers from their website.
• Download and install the driver file.
• Now add it to kernel extension list by running sudo kextload /Library/Extensions/AX88178.kext .
• Restart the device and check in Network Preferences, you will probably see the new interface.

Still not working?

Gently open the box where the ethernet cable is plugged in and check the id above the chip. Search and download proper driver from the manufacturer and enable it. There another collection of generic drivers available for this kind of devices in this link.