-- Welcome --
This software installer provides software for Multi-Tech's MultiModemUSB family of modems and related serial modems. Modems supported by this package include the MT9234ZBA, MT9234ZBA-USB, MT9234MU, MTCBA-C-x, MTCBA-G-x, and MTCBA-E-x.

The USB models (MT9234ZBA-USB, MT9234MU, MTCBA-C-U, MTCBA-G-U, and MTCBA-E-U) require a kernel extension (MultiModemUSB.kext) and the necessary modem scripts.

The serial models (MT9234ZBA, MTCBA-C, MTCBA-G, and MTCBA-E) require only the necessary modem scripts.


-- Versions --
KEXT 2.2.4 and Older: This software is Universal. The modem scripts and 2.2.4 or older kernel extension (KEXT) are intended for Mac OS X 10.4 through 10.5 running on a PowerPC Mac or Intel Mac and Mac OS X 10.6 through 10.8 running on an Intel Mac.

KEXT 2.2.5 and Newer: The modem scripts and 2.2.5 or newer kernel extension (KEXT) are intended for Mac OS X 10.9 and newer running on a 64-bit Intel Mac. The KEXT and the installer are both signed to fulfill the requirements set forth by Apple and enforced as of Mac OS X 10.10.


-- Notes --
NOTE 1: Multiple modems of the same model or differing models may be used at the same time on the same Mac.

NOTE 2: Some early models and some special builds of the MT9234ZBA-USB use the USB communication device class descriptor (0x02). These models will not work with some versions of Mac OS X (10.5 in particular). You may install the software, reboot, and then plug in the MT9234ZBA-USB. If the Power LED on the modem does not light up within 1 minute, then call Multi-Tech Systems for support. Normally the Power LED will light up within a few seconds of having the USB cable connected.


-- Support Information --
Multi-Tech provides free technical support for your product. To obtain this support, use one of the following contact options, keeping in mind that phone calls are handled with first priority:

For faster service, we suggest you create a support case on our Support Portal at https://support.multitech.com

U.S. & Canada number: 763-717-5863
Answered Monday - Friday
8:00 am to 5:00 pm Central Time
(Daylight savings observed when in effect)

International number: +763-717-5863
Answered Monday - Friday
8:00 am to 5:00 pm Central Time
(Daylight savings observed when in effect)

EMEA    support@multitech.co.uk         +(44) 118 959 7774
U.S.    support@multitech.com           800-972-2439 or
(and Rest of World)                     +763-717-5863

Replacement Parts and Accessories
For replacement parts and accessories, contact Multi-Tech at (888) 288-5470, option 3 or +1 (763) 785-3500.

(2.2.5 - June 15, 2015)