The following is a brief overview of the steps to verify that the USBETH is installed correctly—for more detailed instructions, see the PDF.
Depending on when ETHUSB was purchased, it may have chip AX8872, AX88772A, or AX88772B. BIOPAC is currently shipping ETHUSB with AX88772B. A different adapter or newer ETHUSB may be required for users with chip AX8872 or AX88772A; ASIX has a different page for A but that page doesn’t have a driver released since macOS 11 was released.
1. Download the ASIX Driver that supports macOS 11 for the AX88772B chip (and may also support the AX88772A chip).
a) Follow this link to Version 1.2.0: https://www.asix.com.tw/en/product/USBEthernet/High-Speed_USB_Ethernet/AX88772B
b) Click “Download” or scroll down the page to “Download”
c) Expand the “Software & Tools” section to find
3. Turn Wi-Fi OFF before launching AcqKnowledge.
4. If turning off Wi-Fi is insufficient, try the additional steps outlined below.
a) (2.5) Now the USB network interface must be added (10.9+). Open System Preferences > Network. Click on the “+” in the lower left to “Create a new service.
b) In the next dialog that appears, select the “USB Ethernet” interface and give it a default service name. “USB Ethernet” will now be available in the list in the main dialog.
c) (3.5) Unlike previous operating systems, when the cable is connected it will show up as functional with an MP160/150 when it has a yellow dot.
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