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vadyalex
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Joined: Tue Jan 17, 2012 11:03 pm

RB493G USB

Thu Nov 15, 2012 12:29 pm

Hi, I would like to take a note about RB493G USB, the spec says "USB 1, external power required".

Does it mean I have to use some kind of USB-hub with external power to connect 3G modem?
Now I have RB751U and 3G modem plugged there and works.
Why do RB433GL and RB435G have "USB 1" and "USB 2" in the spec without any additional notes? Do they have USB port with power?
May I ask why RB493G USB port is differ?
 
vadyalex
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Re: RB493G USB

Thu Nov 15, 2012 8:49 pm

Thank you guys, you are quite useful :)
Even if the question is stupid it would be nice to point that also.
 
ptt
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Re: RB493G USB

Thu Nov 15, 2012 11:24 pm

The RB493G does NOT provide the 5V to the USB port, you need to use some of this to "power" your 3G modem.

http://routerboard.com/5VUSB
 
vadyalex
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Re: RB493G USB

Fri Nov 16, 2012 12:56 am

I see.
I also finally found the topic with similar discussion.. http://forum.mikrotik.com/viewtopic.php ... 5&p=257725

Can anyone share own experience? Do people use powered USB hub with external power adapter? Solder somehow?

My goal was to replace RB751U+RB750GL with single device and power up the 3G modem. Maybe some other suggestions?
 
popcorrin
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Re: RB493G USB

Fri Nov 16, 2012 6:07 pm

Hi, I would like to take a note about RB493G USB, the spec says "USB 1, external power required".

Does it mean I have to use some kind of USB-hub with external power to connect 3G modem?
Now I have RB751U and 3G modem plugged there and works.
Why do RB433GL and RB435G have "USB 1" and "USB 2" in the spec without any additional notes? Do they have USB port with power?
May I ask why RB493G USB port is differ?
From my testing, the RB751U does not provide usb power so I'm wondering how the 3G modem would have worked?
Now on the other hand, the RB751G I have does provide usb power.
 
vadyalex
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Re: RB493G USB

Fri Nov 16, 2012 7:42 pm

Are you sure? Cause I have Huawei E367 plugged in and it works fine.
According to the spec here http://routerboard.com/RB751U-2HnD it has powered USB port.
 
popcorrin
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Re: RB493G USB

Fri Nov 16, 2012 8:32 pm

I only tested two of them, but neither of them had a powered usb port. I don't see on the spec sheet where it says the usb port is powered? If it does, that's great, because it would save me having to use those little injectors.
When I get time, I'll try testing a different one just to be sure.
 
normalcy
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Location: Brisbane, Australia

RB493G USB

Sun Nov 18, 2012 10:23 am

We had a 493g and a powered USB hub and it still wasn't enough to get the 3G modem recognised. Had to follow the mod suggested in this thread. Has been working fine since.

http://forum.mikrotik.com/viewtopic.php ... 64#p259164
Why do IT guys always confuse Halloween and Christmas?
Because 31 Oct = 25 Dec
 
vadyalex
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Re: RB493G USB

Mon Nov 19, 2012 12:45 pm

What 3G modem you used? What USB hub model? What voltage the hub produced?
 
popcorrin
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Re: RB493G USB

Sat Dec 01, 2012 8:02 am

Are you sure? Cause I have Huawei E367 plugged in and it works fine.
According to the spec here http://routerboard.com/RB751U-2HnD it has powered USB port.
Just wanted to follow up. I got around to testing a couple of other RB751U's and they do indeed have a powered usb port. Which is great news to me.
I'm wondering if the other ones that I had were a different hardware revision or if they had a defect.

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