Include a Linux driver, the bastards, and since my Powerbook runs Presumably to speak some special protocol to it.
Standard USB serial profile it requires a driver to initialize it and Much to my annoyance, this dongle doesn't implement any sort of Keyspan USB-to-DB9-serial adaptor dongle. Wallstreet), but there are plenty of peripherals out there that still Is a good thing (which is why I bought a Lombard instead of a Serial port for a couple of shiny new USB ports.
I own a Mac Powerbook G3 Lombard, which forsakes the decades-old async Hacking the Keyspan USB Serial Adaptor Those annoying nonportable USB devices.