Select this port name in a terminal program. This indicates the USB-Serial driver is working. dev/cu.Bluetooth-Modem /dev/cu.iPhone-WirelessiAP Keyspan serial-USB adapter drivers can be found in their Support Section.Īfter installing the correct driver, plug in your USB-Serial adapter, and open a Terminal session (Applications/Utilities).Įnter the command ls /dev/cu.*, and look for something like usbserial (or similar):.Belkin - USB Serial Adapters: F5U257, F5U103, F5U003 (poor OS X support).Silicon Labs - CP210x USB to UART Bridge Virtual COM Port (VCP) drivers.

If your adapter doesn't work with either of these, try the following sources: NOTE: It may be necessary to remove any previous driver before installing a newer one,Įg: $ sudo rm -rf /System/Library/Extensions/ProlificUsbSerial.kext UPDATE: Mavericks (10.9) includes a driver for FTDI-based Serial-to-USB adapters. Most Serial-to-USB adapters will work on a Mac with one of the following OS X drivers. You can use screen, although Minicom (or a GUI program) offer more features and functionality. You just need a serial to USB adapter, the right driver, and some Terminal software.

Mac's are excellent tools for accessing serial device TTY ports (to console into PBX's, switches, and routers).

Names for the mac os gui interfaces