Carnation Software - Keyspan USB to Serial Adaptor
MacWise - Macintosh Terminal Emulation - telnet / serial for OS X - Wyse, Viewpoint, VT100, VT220
 
Serial Adapters, Modems
iPhone and iPad
 

If you want to connect to your host with a serial connection, you will need a serial adapter.

Airconsole
Connect Wirelessly to your serial device

(Works with MacWise on your Mac and also works with the Get Console app for iPhone and iPad)

Get your Airconsole here and use Promo Code MACWISEISGOODFORYOU
to get a $10.00 discount.

Also, works with ethernet so you can access your serial device from anywhere on your existing network.

Note: For Airconsole support, visit the Get Console website here

 

Keyspan and generic adaptors information:

NOTE: Keyspan is now owned by Tripplite.
Here are the drivers:

Keyspan drivers here (Click on the Support Tab)

Note: If you are using a non-Keyspan usb to serial device with Lion, you can most-likely get it working by using a generic pl2303 driver here...
http://prolificusa.com/pl-2303hx-drivers/

 

    Keyspan "High Speed" USB Serial Adapter
Uses a PC standard 9-Pin serial connector.
This is the least expensive solution since it has just one port and does not require a Mac modem cable.
   

Keyspan Twin Serial.
A little more expensive but you get two serial ports.
Uses standard Mac modem cable connectors which means you need a Mac modem cable also.

The Keyspan Adapter plugs into your Mac's USB port.
The other end of the whole assembly plugs into a RS232 cable going to your host computer.
Note: the "whole assembly" drawing shows an older style single-port adaptor.

   

Zoom 56K V.92/V.90 Modem (USB Mini External)

If you just need to dial using a modem and phone line, you can get this modem (instead of a USB to Serial Adaptor)

The Zoom Model 3095 USB Mini External is a V.92 analog voice faxmodem that combines a highly efficient design, easy installation and high performance in a low-cost product. With its small size (2.8 inches X 1 inch X 0.8 inches), light weight, and integrated USB cable.

    Macintosh Modem Cable for use with Keyspan Twin Serial adaptor.