Click here: to return to the 'Use 'screen' as a serial terminal emulator' hint. And of course no Mac (except for Xserves) have a serial port.---Startup Shortcuts.

Mac's and serial TTY's Mac's are excellent tools for accessing serial device TTY ports (to console into PBX's, switches, and routers). You just need a serial to USB adapter, the right driver, and some Terminal. You can use, although (or a ) offer more features and functionality. Drivers: Most Serial-to-USB adapters will work on a Mac with one of the following OS X drivers.

UPDATE: Mavericks (10.9) includes a driver for FTDI-based Serial-to-USB adapters. Prolific PL2303: FTDI USB Serial: NOTE: It may be necessary to remove any previous driver before installing a newer one, eg: $ sudo rm -rf /System/Library/Extensions/ProlificUsbSerial.kext If your adapter doesn't work with either of these, try the following sources: • - CP210x USB to UART Bridge Virtual COM Port (VCP) drivers. • - USB Serial Adapters: F5U257, F5U103, F5U003 (poor OS X support). • serial-USB adapter drivers can be found in their Support Section.

After installing the correct driver, plug in your USB-Serial adapter, and open a Terminal session (Applications/Utilities). Enter the command ls /dev/cu.*, and look for something like usbserial (or similar): $ ls /dev/cu.* /dev/cu.Bluetooth-Modem /dev/cu.iPhone-WirelessiAP /dev/cu.Bluetooth-PDA-Sync /dev/cu.usbserial This indicates the USB-Serial driver is working.

Select this port name in a terminal program. Note: Check your adapter works after an OS Update, as you may have to re-install the driver. You might notice that each serial device shows up twice in /dev, once as a tty.* and once as a cu.*. So, what's the difference?

Usaa app for iphone. Well, TTY devices are for calling into UNIX systems, whereas CU (Call-Up) devices are for calling out from them (eg, modems). We want to call-out from our Mac, so /dev/cu.* is the correct device to use.

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The technical difference is that /dev/tty.* devices will wait (or listen) for DCD (data-carrier-detect), eg, someone calling in, before responding. /dev/cu.* devices do not assert DCD, so they will always connect (respond or succeed) immediately. Software: Having installed the right driver, our USB-Serial adapter will show up in /dev/cu.* (shown above).

We now need to install some terminal emulation software before we can connect to anything. • Two terminal methods are and • For a GUI solution, see Note: If you can't find a driver for your adapter (eg, Belkin), try which has built-in support for many USB-Serial devices. Screen It's not actually necessary to download an install extra software, as you can use the Mac OS X built in Terminal and screen. Screen lacks some features, but it does include VT100/ANSI terminal emulation, and can be extremely useful. • Open an OS X terminal session (window) • Find the right TTY device. Type: ls /dev/cu.* With the USB-Serial adapter plugged in, you'll get a list, including something like this: $ ls /dev/cu.* /dev/cu.Bluetooth-Modem /dev/cu.iPhone-WirelessiAP /dev/cu.Bluetooth-PDA-Sync /dev/cu.usbserial.