USB-C Ethernet Adaptor no longer works

I had this problem too, check this if you want to try something

https://www.insanelymac.com/forum/topic/340786-solved-realtek-rtl8153-usb/

Ive got the same problem. The only solution I found with my Realtek is to shutdown the system, every time when you unplug the device. Remember shut down not restart. This is very important! I think that this is a problem with paring or sandboxing the device. I tried with three different cards and problem was the same.

My Chip Info

Product ID: 0x8153

Vendor ID: 0x0bda  (Realtek Semiconductor Corp.)

Version: 30.00

Any idea how to report this bug?!

Jayson Bryant Said:

”USB-C Ethernet Adaptor no longer works: [...] It appears to use the RealTek chipset if that helps. Anyone have any ideas besides wait?“

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Contact the company(StarTech) and request they send you a link to a driver.

UsusOne Said:

“There is no working driver for my RTL8153. I wrote an email to Realtek. I'm not surprise if they will not replay :)”

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Catalina is only 64-bit! A Virtual Machine (VM) can be either 32-bit or 64-Bit

Well whatever the device, I gotta hunch that if it’s not working with Catalina, yet it is still operating with your VM, then it’s indeed no more than 32-bit drivers or an app trying to be installed, and not 64-bit like Catalina is designed for. So, ask the Web master of the site for the 64-bit drivers or App required.

The guy asked for a solution, I gave one that was working for me. After your post I start digging and realised that there might be something wrong with drivers which was odd anyway. As far as I can remember I have not installed any on my Mojave and RTL was running out of the box like a charm...

Right now it's working without any official RTL driver but you need to shutdown your laptop every time you unplug your usb-c to ethernet device.

USB 3.1 Bus:

Host Controller Driver: AppleIntelCNLUSBXHCI

PCI Device ID: 0xa36d

PCI Revision ID: 0x0010

PCI Vendor ID: 0x8086

BillBoard Device:

Product ID: 0x5400

Vendor ID: 0x0bda (Realtek Semiconductor Corp.)

Version: 1.04

Serial Number: 123456789ABCDEFGH

Speed: Up to 12 Mb/s

Manufacturer: Realtek

Location ID: 0x14300000 / 1

Current Available (mA): 500

Current Required (mA): 0

Extra Operating Current (mA): 0

USB 3.1 Bus:

Host Controller Driver: AppleUSBXHCITR

PCI Device ID: 0x15ec

PCI Revision ID: 0x0006

PCI Vendor ID: 0x8086

Bus Number: 0x01

USB 10/100/1000 LAN:

Product ID: 0x8153

Vendor ID: 0x0bda (Realtek Semiconductor Corp.)

Version: 30.00

Serial Number: 000001000000

Speed: Up to 5 Gb/s

Manufacturer: Realtek

Location ID: 0x01200000 / 1

Current Available (mA): 900

Current Required (mA): 256

Extra Operating Current (mA): 0

Jason Bryant Said:

"USB-C Ethernet Adaptor no longer works"

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Getting Drivers

IF you were to get any drivers, I suggest you do not use any third-party drivers -- that's just going to increase the chance of installing Malware.

What is more interesting the interface is working when you pass the adapter to Fusion guest VM :)

There is no working driver for my RTL8153. I wrote an email to Realtek. I'm not surprise if they will not replay :)

Besides that it would be nice and pro If Installer would inform you which 3rd party drivers will be not supported before installation process.

Thats what you suggest few post above contact startech and get driver... you are so funny i like you. ;)