RB Series Support

Installing the USB Driver for Mac OS X

Last Revision: November 4, 2006

The information in this document applies to:

  • First time users of RB-530RB-730RB-830, and RB-834 response pads models using Mac OS X 10.3.9 and later.Note: if using an earlier response pad model, click here.


Please follow the installation instructions carefully!


Step 1 – Connecting The Response Pad

Connecting your response pad is straightforward. Only the USB cable (included with the pad) needs to be connected to your computer. No separate power supply is necessary.

  • Insert one side of the USB cable into the response pad.
  • Insert the other side of the USB cable into any available USB port on your computer. A few seconds later, the Mac will display an alert (message) informing you that the driver for this device is not installed.

There is a green LED (small light) to the left of the USB connector; it should be turned On after the response pad is connected.


Step 2 – Downloading and Installing the USB Driver

Click on the following link to begin the download:

Download the USB driver  [421 KB]

It is a “disk image” (DMG) file.  When you downloaded and run it, it will look to your Mac as if a new disk is mounted:

  • In Safari 5.1 on Mac OS Lion or later, click on the “Show downloads” icon in the upper right of the browser window.  A “pop-over” mini window will appear.  Double-click on the downloaded file; it would be the first one on the list.  This will open a new disk image; see below.

  • In Safari on Mac OS Snow Leopard or earlier versions, click on the Windows menu item and select Downloads.  You will see a window similar to this, with the downloaded file usually on the bottom of the list.  Double-click on the downloaded file to open the disk image.

  • In Firefox, double-click on the file name in Firefox’ Downloads window to open the disk image.

The Finder automatically opens a window to view the disk image’s contents.  It contains two installer files:

  1. The file FTDIUSBSerialDriver_10_3 is users of Mac OS 10.3 only.

  2. The other file is for Mac OS 10.4 Lion and later versions.



if you get an error message during the installation, this would be most likely due to a previous driver file being present on your Mac.  It needs to be deleted.  To do so, in the Finder’s left sidebar, click on your computer’s name.  This is important: click on the computer’s name, not your own account’s:

  • Then click on your disk (usually Macintosh HD), then Library, then Extensions.

  • Look for a file named “FTDIUSBSerialDriver.kext”.

  • Delete it.