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Recommendations for powered USB 3.0 hub

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10 replies to this topic

#1 Fivel

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Posted 27 October 2019 - 11:48 AM

Hello to all.

This may be an old topic, but here is my need.

I have a Sabrent powered 4 port USB hub, but it is undependable in cold weather.

It is mounted on my scope top rail, inside my observatory.

Can anyone please recommend a better one that is more tolerant of sub 30 degrees F.?

I use it to connect my USB 3 cameras and a USB 2 (no issue) focuser.

The hub is then connected to my scope side computer via a 16" cable.

It works well in warmer weather though.

 

Thanks in advance for any ideas.

 

Fivel



#2 scadvice

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Posted 27 October 2019 - 12:29 PM

I recently bought this hub from Coolgear.

 

4 Port USB 3.1 Micro Hub with Variable Voltage and Surge Protection

 

https://www.coolgear...category/hubs-2

 

It wasn't cheap at 79.99 usd but works flawlessly. They make commercial hubs so I would call them to see what they suggest.


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#3 Jim Davis

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Posted 27 October 2019 - 01:00 PM

In our observatory, we use Tripp-Lite industrial hubs like this one: https://www.tripplit...able~U360007IND

 

Haven't had an issue with cold temperature.


Edited by Jim Davis, 27 October 2019 - 01:01 PM.


#4 rgsalinger

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Posted 27 October 2019 - 01:46 PM

I have used Startech USB 3 industrial hubs for a long time. The oldest is now 5 years old and going strong! They have never failed me at temperatures as low as 20 degrees. I can't comment on what happens below that with them. I like that they take 12v DC power which I have available on all my mounts - nothing to plug into the mains.

 

Rgrds-Ross


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#5 Fivel

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Posted 27 October 2019 - 02:19 PM

Thanks to all for your suggestions.

I will be comparing the specs and prices for a 4 port hub.

So far, Coolgear has a great price at $35USD.

 

Fivel



#6 scadvice

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Posted 27 October 2019 - 03:53 PM

Thanks to all for your suggestions.

I will be comparing the specs and prices for a 4 port hub.

So far, Coolgear has a great price at $35USD.

 

Fivel

Just so you know that one Model #: CG-U3MINI4PH requires a 5 volt power supply to be plugged in. That is why I went with the pricier CG-MIC4P31HVV. I wanted to be able to hook directly into a 12v DC supply or battery.



#7 RaulTheRat

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Posted 27 October 2019 - 04:20 PM

I second the suggestion of the startech industrial hub, again because they take 12v. They're also electrically isolated to a better extent than a typical consumer hub.

#8 guyroch

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Posted 31 October 2019 - 11:40 AM

The hub is then connected to my scope side computer via a 16" cable.

From what you are saying the hub is not the issue IMO.  It's the cable length.

 

USB3 cable maximum length is about 9 feet; you have 16 feet.  That is almost twice the length. This is trouble territory big time.

 

USB2 cable maximum length is about 15 feet.

 

Anything longer than the recommended length you need an active repeater cable.

 

Guylain


Edited by guyroch, 31 October 2019 - 11:41 AM.

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#9 scadvice

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Posted 31 October 2019 - 03:12 PM

From what you are saying the hub is not the issue IMO.  It's the cable length.

 

USB3 cable maximum length is about 9 feet; you have 16 feet.  That is almost twice the length. This is trouble territory big time.

 

USB2 cable maximum length is about 15 feet.

 

Anything longer than the recommended length you need an active repeater cable.

 

Guylain

Guylain, He said 16 inches but I'm thinking he MAY have meant 16 foot...


Edited by scadvice, 31 October 2019 - 03:27 PM.

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#10 guyroch

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Posted 31 October 2019 - 06:05 PM

Guylain, He said 16 inches but I'm thinking he MAY have meant 16 foot...

Oh... if that is the case than I have mis-spoken.  Thanks for pointing it out.  waytogo.gif


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#11 scadvice

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Posted 31 October 2019 - 06:44 PM

Oh... if that is the case than I have mis-spoken.  Thanks for pointing it out.  waytogo.gif

Still it was good piece of information to remember in any case. coolnod.gif




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