Peter Udbjørg wrote:

Anybody having any experience with USB-to-Serial-converters? Or USB-to-Parallel for that matter? Curios if I could get OSX to see my Apple LaserWriter with a USB-to-Parallel-thingy & a parallel printer cable (LW select has a parallel port that works). A drag to have to make PDFs in X & then reboot in OS9 to print...

I've a little experience with USB converters. I've used various parallel printers including a LaserJet 4M that I currently print with using USB-Parallel converters. I've used the HP C4033-60003 converter cable that was called the "iMac USB Printer Cable". This was sold in the late 90's prior to OS X and the software provided on CD was for OS 8.6 and only certain HP printers. In OS X it works without need of special drivers, although the setup can be somewhat difficult depending on your version of OS X. Newer versions like Tiger are easier. Short instructions for setup would be to use Printer Setup Utility in the Advanced mode (press Option key) and hopefully find the description of the cable and tie it to your preferred driver. I personally think all the HP drivers are awful, and you should probably use the latest GimpPrint drivers (now called GutenPrint) available here:http://sourceforge.net/projects/gimp-print/ If you're having problems configuring a printer in Printer Setup Utility/Print Center, you can use the CUPS setup at: http:// 127.0.0.1:631/. This is not a website, it's on your computer, the address is the "local host" and you can use any browser to run the setup. If it asks for your name & password, these are the ~User name & password for your computer. In the CUPS setup you'll need to determine the printer URI which is done like this:
1) Connect your printer via USB and power it on.
2) Open Terminal
3) Type "lpinfo -v" (without quotes) and hit Return key.
The USB URI should be listed in the printout. Copy it over into the CUPS setup and finish. Should work with nearly any printer.

As for the USB-Parallel cables, I think all brands are basically the same and all work in OS X without any extra software. Many have been on eBay for only a few dollars + shipping. Another option I've used is the Belkin USB 2.0 Dockstation F5U216 which has RS232 port (serial), Parallel printer port, VGA pass-thru, 10Base-T/100Base-T Ethernet port (100Base-T in high-speed mode only), Two Hi-Speed USB 2.0 hub ports. This was made for PC laptops, but works good a a mass- converter for Mac desktop units. There is software for all the ports in OS X. The Parallel is done by a Prolific Logic PL-2305 and doesn't need any software. The Serial is done with an FTDI chipset and drivers are here:http://www.ftdichip.com/Drivers/FT2232CDrivers.htm. The ethernet is done with an Asix AX88172 chipset and drivers are here:http://www.sustworks.com/site/news_usb_ethernet.html. You'll need to get a converter for the PC RS232 to Mac RS422 DIN serial connector. To make a converter cable from a Mac cable here is good info:http://francis.courtois.free.fr/jc1/serial/main.html. I don't know about the video pass-thru, its the only thing I've never tried.

Good luck! Kris



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