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Any supported USB to Serial Adapters for M1 Macs?

ghostlines

ghostlines

macrumors regular
Original poster
Feb 3, 2010
155
14
Amsterdam
Hello community,

Does anyone have experience with a compatible USB to Serial Adapter on M1 Macs?
I've been using https://www.tripplite.com/high-speed-usb-to-serial-adapter-keyspan~USA19HS but the driver kext is x86 and won't run.

Error output when trying to load kext:
Code: 
m1 ~ % sudo kextload /Library/Extensions/KeyspanUSAdriver.kext

Executing: /usr/bin/kmutil load -p /Library/Extensions/KeyspanUSAdriver.kext
Error Domain=KMErrorDomain Code=71 "Incompatible architecture: Binary is for x86_64, but needed arch arm64e" UserInfo={NSLocalizedDescription=Incompatible architecture: Binary is for x86_64, but needed arch arm64e}
 
certsoft said:
I haven't had any trouble with the FTDI based serial adapters on my M1 Mac Mini. No need to deal with any kexts or anything like that, the drivers (at least for FTDI) are built into the OS.
Click to expand...
Hello: Can you tell me with serial adapters do you have. I can't get mine working.
Thanks in advance.
 
Lately, I have been using the Keyspan USA-19HS adapter with the Indigo app from Perceptive Automation.

After migrating to Big Sur (11.6), I needed to install a new driver. I get an error message just trying to launch the driver installer. Tripp Lite says that's a known problem and that they cannot help me. To my experience, the reliability of the Keyspan device support over time (i.e over OS upgrades) is flakky.

Do you guys know if that StarTech adapter is good, has good support and long term reliability with Apple OS and hardware ?
 
I need a way to communicate with Motorola radio programming software using Windows 11 ARM64 in Parallels. The Mac is an M1 Pro and nothing I can do will allow functionality with my Prolific USB to serial adapters. I think Parallels now uses the host OS drivers and bridges a connection to the VM? When I check the version for Prolific on the bridged COM 1 it says no PL2303 device found. Also, when I install the driver from that link a few posts up for Startech, the device manager says no compatible driver found.

Any advice or sugestions?

Paul
 
Last edited:
Can you forward this USB-RS232 device to Windows in Parallels and have windows take care of drivers and whatnot? This should work PL2303 should be Plug and Play in Windows and it should appear as COM1 - 4
 
xszuflax said:
Can you forward this USB-RS232 device to Windows in Parallels and have windows take care of drivers and whatnot? This should work PL2303 should be Plug and Play in Windows and it should appear as COM1 - 4
Click to expand...

Connecting the device to MacOS and enbling the serial port in Parallels results in the VM rendering a COM1 poiting at whatever serial port was configured prior to booting into Windows. If the devide is connected directly to Windows VM, it shows in Device manager and is assigned a new port number. Neither way results in a successful connection.

Paul
 
How about USB-c to Scsi-2. Then I could use my old 4 mb/s 20 meg drive again.
 
ghostlines said:
Yes - https://www.startech.com/en-us/cards-adapters/icusb232c worked fine.
Click to expand...
Hello ghostlines,

I am still with an Intel iMac (27" early 2019 3.7GHz i5) running Big Sur v11.6.

The Tripp Lite USA-19HS serial adapter is only compatible with v11.4. With v11.6, I cannot even launch the installer and Tripp Lite is not giving it really a try.

I am not a tech person. I like to try stuff, but don't understand all the issue with those adapters. I use it for home automation with the Indigo app from Perceptive Automation. Even them were not able to drop in a solution.

Do you have any idea what serial adapter would be best suited for my purpose ?

Thanks in advance.
 
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