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Forums | USR (Public) | External 3COM U.S. Robotics 56k Voice Faxmodem Pro help...    Watch  
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Tl Posts:

Posted - 4/30/2005 2:58:35 PM  Show Profile  Email Poster  Edit Message
Receieved this modem without an power supply adapter. Following are the details of the modem:

3COM U.S. Robotics 56k Voice Faxmodem Pro
Model number is: 0525
FCC Reg.No. : 4X2USA-32128-M5-E

I emailed USR tech support and they informed me:
Thank you for choosing U.S. Robotics.

"I understand that you need power supply specification for USR5605.

Power supply specification for USR5605 is V AC 1.5A."

I have a universial ac-dc adaptor, and the specifications on that are:
model: 900-100
input:100/220v 60/50Hz
Power: 18 W
Output: 1.5.-3-4.5-6-7.5-9-12V
Current: DC 1000mA max

Will this universial adaptar work with the external modem? I'm confused on which settings the tech support gave me. The "USR5605 is V AC 1.5A." I tried 1.5v and didn't power the modem on. I dont want to burnout or overload the modem, if anybody can please help me with this would be greatly appreciated.



Tl Posts:

Posted - 5/15/2005 11:35:26 PM  Show Profile  Email Poster  Edit Message  v.Richards Homepage
1.5 a is amperage rating not voltage rating;
The voltage you need is missing from the specifications you list:

Power supply specification for USR5605 is ##V AC 1.5A.

You do not want to use an adapter that puts out DC voltage (an AC-DC adapter is not good); you need an AC adapter that puts out AC with correct voltage (I think it's something like 9vac).

Aloha! Richard.

Tl Posts:

Posted - 5/17/2005 9:10:53 AM  Show Profile  Email Poster  Edit Message
I have Model 2806 External Courier V Fax/Data Everything modem that has a round 2-pole jace for the power supply input. This particular family of modems uses 20 VAC @ 750 mA.
Tl Posts:

Posted - 5/17/2005 9:33:40 AM  Show Profile  Email Poster  Edit Message  v.Richards Homepage
(Sportster and Courier modems are of different design and will not use the same power supply.)

Aloha! Richard.

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