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Keyspan Serial Adapter Not Recognized (QS G4)
Posted by: dv- on 2024-08-10 12:38:28
Got a keyspan serial port adapter and seem to be encountering some driver issues. System Profiler sees it but the Keyspan software doesn’t.

https://imgur.com/a/fpYDCh4

Any ideas? (I assume I’ve got a driver version mismatch or something, but I’m not sure where to start.)

The model number of the adapter (USA-28X B) notably is different than the part number references on the website (USA-28XG) but I can’t find any references to the B model and Google only finds the G, so I’m not sure what to make of that.
Posted by: finkmac on 2024-08-10 13:31:17
translucent model huh



try the 1st one and then try the 2nd one if the 1st doesn't work
Posted by: joevt on 2024-08-10 14:07:05
I don't remember using Keyspan adapters with Power Macs.

For Intel Macs, I use Serial.app which has a built-in driver.

Here's my keyspan notes:
To list the devices:

find /dev -iname 'tty.*' -o -iname 'cu.*' -maxdepth 1

    /dev/cu.KeySerial1
    /dev/tty.KeySerial1
    /dev/cu.USA28143P1.1
    /dev/tty.USA28143P1.1
    /dev/cu.USA28143P2.2
    /dev/tty.USA28143P2.2
    /dev/cu.USA28X14611P1.1
    /dev/tty.USA28X14611P1.1
    /dev/cu.USA28X14611P2.2
    /dev/tty.USA28X14611P2.2
    /dev/cu.pci-serial0
    /dev/tty.pci-serial0
    /dev/cu.pci-serial1
    /dev/tty.pci-serial1
    /dev/cu.Bluetooth-Incoming-Port
    /dev/tty.Bluetooth-Incoming-Port


To test the serial port without a terminal app:
    screen /dev/cu.USA28X14611P2.2  115200,cs8,-parenb,-cstopb,-hupcl -D RR
    screen /dev/cu.KeySerial1       115200,cs8,-parenb,-cstopb,-hupcl -D RR
    screen /dev/tty.USA28X14611P1.1 115200,cs8,-parenb,-cstopb,-hupcl -D RR
    screen /dev/tty.USA28X14611P2.2 115200,cs8,-parenb,-cstopb,-hupcl -D RR

or
    sudo cu -s 115200 -l /dev/tty.USA28X14611P1.1
    sudo cu -s 115200 -l /dev/tty.KeySerial1
    
KeyspanUSAdriver.kext

SnowLeopard 10.6.8      Works: 2.6 Copyright © 2000-2009 Keyspan (October 12, 2009)
Lion 10.7.5             Works: 2.6 Copyright © 2000-2009 Keyspan (August 12, 2009)
                        Doesn't work: 3.0 Copyright © 2000-2013 Keyspan (February 6, 2014)
Mountain Lion 10.8.5    Works: 2.6 Copyright © 2000-2009 Keyspan (August 12, 2009)
Mavericks 10.9.5        Works: 2.6 Copyright © 2000-2009 Keyspan (August 12, 2009)
Yosemite 10.10.5        Works: 2.6 Copyright © 2000-2009 Keyspan (August 12, 2009)
ElCapitan 10.11.4       Works: 2.6 Copyright © 2000-2009 Keyspan (August 12, 2009)
Catalina 10.15.7        Works: 2.6 Copyright © 2000-2009 Keyspan (August 12, 2009)
BigSur 11.3.1           Works: 2.6 Copyright © 2000-2009 Keyspan (August 12, 2009)


So the August 12, 2009 kext is Intel only. 32-bit and 64-bit kernels.
It can be found in these:
"Driver for USA-28XG (Mac OS X 10.6.x to 10.8.x)"
It also might be found in:
"USA-19HS Driver (Mac OS X 10.28.x to 10.5.x)"
which doesn't seem right but whatever. I won't check.

I'm not sure where the October 12, 2009 kext came frame. It is only Intel 32-bit only.

For ppc, you need 2.5 version instead of 2.6.
It supports 32-bit ppc and intel kernels.
It can be found in:
"Driver for USA-49WG (Mac OS X 10.2.8 to 10.5.x)"

tripplite.eaton.com

Model Number USA28XG | Eaton

Owner's Manual, Downloads and Support Resources for Eaton USA28XG | USB Adapters | Serial
tripplite.eaton.com tripplite.eaton.com
tripplite.eaton.com

Model Number USA49WG | Eaton

Owner's Manual, Downloads and Support Resources for Eaton USA49WG | USB Adapters | Serial
tripplite.eaton.com tripplite.eaton.com
Keyspan.png
Posted by: cheesestraws on 2024-08-10 14:14:34
There are definitely multiple hardware revisions which have very different innards. I would see if you can find a newer driver, probably starting from where @finkmac linked. See the bottom of this page: https://www.hhhh.org/wiml/proj/keyspan.html
Posted by: dv- on 2024-08-15 19:15:15
Okay, so success, sort of. I tried several different driver revisions, none worked. But on a hunch, I plugged in into my PC, and the device manager gave me some weird errors that I usually associate with defective hardware.

So I bought another one of the same adapter and it was recognized immediately. First one was just fried.

Thanks for the help though. 🙂
Posted by: Slimes on 2024-08-15 19:21:42
I have the x version. Seems to be seen fine with the non-g driver. Can't seem to print to an apple imagewriter I tho. Any ideas? I'm using 9.2 direct imagewriter extension on a QS.
Posted by: dv- on 2024-08-16 02:20:01
I have the x version. Seems to be seen fine with the non-g driver. Can't seem to print to an apple imagewriter I tho. Any ideas? I'm using 9.2 direct imagewriter extension on a QS.
The Keyspan assistant can provide some port monitor capabilities, so you can see if the data is being sent. A draft mode page from simple text will be short and obvious.

Might be the cable you’re using. Early Apple printers required a “crossover” or null-modem style serial cable, but LocalTalk cables and a lot of the generic ones you can buy now are thru-wired.
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