Mac OS X v10.5 Leopard includes a screen reader called VoiceOver that supports Nippon Telesoft Seika Braille display.

(To use Seika Version 3 display with VoiceOver, all a customer must do is download and install the driver on a Mac running Mac OS X 10.5 Leopard. )

When you have a Seika Braille display connected to your computer, VoiceOver automatically detects it and sends it information about what is displayed on the screen.

You may also link to the update:  Download