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Post by brand on Oct 20, 2017 10:23:49 GMT -5
I recently got a Intel Compute Stick. In the user guide it says: "The Intel Compute Stick is designed to use up to 10W of power. USB ports on televisions or monitors do not supply enough power for the Intel Compute Stick."
Will the XMC be able to deliver that? I couldn't find the exact spec in the manual. I would just test it out but I don't own a USB-C to USB-A cable so if it's not possible anyway I won't order a cable.
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Post by RichGuy on Oct 20, 2017 12:05:28 GMT -5
The "type A" USB slots on the front and back of the XMC-1 are only for firmware updates, only the "type B" USB on the back is designed for anything else.
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Post by millst on Oct 20, 2017 12:11:25 GMT -5
That's 2A, USB spec is 500mA. Bad idea. Use a power brick.
-tm
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Post by brand on Oct 21, 2017 8:16:59 GMT -5
The "type A" USB slots on the front and back of the XMC-1 are only for firmware updates, only the "type B" USB on the back is designed for anything else. I've been using the back type A slot to power my chromecast and it works perfectly. Why wouldn't it. But I suspect it won't be enough for the compute stick. |
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Post by brand on Oct 21, 2017 8:25:12 GMT -5
That's 2A, USB spec is 500mA. Bad idea. Use a power brick. -tm  Where are you getting the 0.5 A from? (You might be right I'm just wondering)  |
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Post by AudioHTIT on Oct 21, 2017 11:00:24 GMT -5
That's 2A, USB spec is 500mA. Bad idea. Use a power brick. -tm Where are you getting the 0.5 A from? (You might be right I'm just wondering) 500mA is the USB 2.0 standard for power delivery from a port, 900mA for USB 3.0. “Chargers” can deliver more, but typically can’t provide USB connectivity.  |
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Post by millst on Oct 21, 2017 11:23:39 GMT -5
Right. The Raspberry Pi is somewhat notorious for weak power delivery, which seems to work at first (for devices that require solid power) and can later cause strange malfunctions.
Of course, the ports can deliver more than the spec and some do, but it's not something you can count on. There's no fiscal reason to over-engineer them.
I feel like this has already come up here before and somebody from Emotiva advised against it. Maybe it was even a Chromecast, which just barely works with 500ma. The included charger definitely supplies more than 500ma.
-tm
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Post by brand on Oct 21, 2017 11:59:39 GMT -5
Thanks for clearing that up  |
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Post by ÈlTwo on Oct 21, 2017 15:10:33 GMT -5
It's not that the ports can deliver more than the spec, there are two different specs. The earlier spec from the chart above is for USB battery charging, note it's from 2007, and the USB 2.0 spec is from 2000; different specs for different purposes. Of course USB C and 3.0+ still are subject to different power delivery specs. Bottom line is that Emotiva used the minimal spec intending the port for data.
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