So do people have speakup working with usb serial adapters connected to rs232 synthesizers? Or is it just the usb synths that are problematic? If it's not done already it would make sense that the communication driver code is abstracted as separate from the synthesizer hardware specific code. Are only the standard /dev/ttyS* ports working right now or is there speakup support for usb-serial adapters? Gregory Nowak wrote: It seems that a bigger issue would be looking at the speakup code, and figuring out if it can be made to work with non- standard serial ports, instead of just those from ttyS0 to ttyS3, using standard i/o addresses.