Topic: FutureBit Moonlander 2 USB Hubs Thread - page 7. (Read 4242 times)

ok yep thanks - I can see from the specs:

The Sipolar A223
http://www.sipolar.com/page172.html?product_id=166
Quote: "Rated Output 5V 2100mA"

Where the Sipolar A200:
https://www.aliexpress.com/store/product/USB-2-0-20-Port-Industrial-High-Power-Charger-Hub/1938705_32641188575.html
Quote: "Rated Output:5V 650mA"

Oh well - none of them are any good i think

I've seen this one mentioned on this forum (but not sure about Moonlander 2) which i might go for:

Plugable USB3-HUB7BC
https://plugable.com/products/usb3-hub7bc/
PSU: 12V, 5A
Quote from link : "USB over-current protection supporting up to 900mA per port (up to 1.5A for BC 1.2 devices)"

Update - I got this email from pluggable support about their 7 port usb 2 / usb 3 hubs:


Anyone able to try 7x moonlander 2 on one of these hubs ?

If you were to split all 7 ports up equally and assuming 100% efficiency you could in theory draw about 1.71A per port.

Just to help out, I did a test for you.

https://i.imgur.com/h2O1J21.jpg

You can't fit 7 in one anyway, since the fans stick out.

That one I can't help much with - don't have an extra extension cables to try.

Awesome, I wonder though if 4x usb extension cables could be used on the unused ports?

Anyone able to try 7x moonlander 2 on one of these hubs ?

Thanks for asking. The person in that forum is correct, there are three 12 to 5V buck converters that all share the same incoming 12V from the power adapter on both our USB2 and USB3 "HUB7BC" models.

We've done load tests drawing nearly the full 60W the power adapter is rated for spread across all ports (about 1.5A per port) and did not have any issues for normal USB devices, but depending how much power these miners each pull under load and when overclocked, I suspect that three on one buck converter might be an issue as the poster in the forum ran into.

If you were to split all 7 ports up equally and assuming 100% efficiency you could in theory draw about 1.71A per port. However, there will be some efficiency loss in the 12 to 5 step down and also as the load increases you will in turn run into some voltage drop which is what I suspect was the issue. The miners probably can't tolerate lower voltage, especially when overclocked.

I can't think of a reason why our hub could only power three, from our testing I'd expect if you got a hub, perhaps 5, maybe 6 would be OK running 24/7 at maximum load. But this is all pretty out of the normal use case scenarios for our hubs.

I know this isn't a perfect answer, but perhaps try a hub out and worst case if it doesn't work for your needs we can offer a return for a full refund. For all we know maybe that person had a defective hub, it's rare but does occasionally happen!

...the supplied power adapter delivers 12A of available current across all USB ports which leaves us 1.5A left over (7 * 1.5A = 10.5A).

ok - thats a shame and a bit naughty if it does (not saying you're wrong) but their web site (for both USB 2.0 and USB 3.0) hubs says:

Q: Can the hub support 7 devices which charge at the full BC 1.2 CDP 1.5A rate?
A: Yes, the supplied power adapter delivers 12A of available current across all USB ports which leaves us 1.5A left over (7 * 1.5A = 10.5A). Non BC 1.2 devices max out at only 500mA per the USB 2.0 specification leaving ample power for every port to be used at the same time.

So been thinking about these "pluggable" ones and noticed this comment:


So - Has anyone tried to connect 7 moonlander to either of these hubs?  I know they might have space issues but i'm sure a mini USB extension cable like this one could fix that:
https://www.ebay.co.uk/itm/USB-3-0-Angle-90-Degree-Extension-Cable-Male-to-Female-Adapter-Cord-length-20cm/372061915159?hash=item56a09e4817:m:mthDKeekyOy4PZktBWEZgtA

Plus do these Moonlander 2 devices "fool" the hub into thinking that they are a BC 1.2 device:
https://www.maximintegrated.com/en/app-notes/index.mvp/id/5801
if they do - just need to look for a BC 1.2 compatible hub, yes ?

.......
Budget Hub for 3 or fewer Moonlanders
Pluggable USB hub - https://www.amazon.com/gp/product/B00L2LK164
These have 3 voltage regulators that are shared by the ports next to each other, so you can only run at max 3 of the Moonlanders. Put one on port 1, port 4, and port 7.
.......

- Fast Charging only with BC 1.2 compatible devices like Apple iPads and iPhones with lightning connector
- Because only some devices support BC 1.2, check compatibility list below before purchase
- Some of those mobile devices have adopted proprietary mechanisms to draw more power than USB 2.0 was designed to allow, which has caused confusion about charging.  That is being solved by the Battery Charging (BC 1.2) Standard – when both the device and the hub/charger are BC Standard compliant, it can charge at a faster rate (up to 1.5A) in a standard way.
Quote from the FAQ:
Q: Can the hub support 7 devices which charge at the full BC 1.2 CDP 1.5A rate?
A: Yes, the supplied power adapter delivers 12A of available current across all USB ports which leaves us 1.5A left over (7 * 1.5A = 10.5A). Non BC 1.2 devices max out at only 500mA per the USB 2.0 specification leaving ample power for every port to be used at the same time.

- Some of those mobile devices have adopted proprietary mechanisms to draw more power than USB 3.0 was designed to allow, which has caused confusion about charging. That is being solved by the Battery Charging (BC 1.2) Standard – when both the device and the hub/charger are BC Standard compliant, it can charge at a faster rate (up to 1.5A) in a standard way.
Q: Can the hub support 7 devices which charge at the full BC 1.2 CDP 1.5A rate?
A: Yes, the supplied power adapter delivers 12A of available current across all USB ports which leaves us 1.5A left over (7 * 1.5A = 10.5A). Non BC 1.2 devices max out at only 500mA per the USB 2.0 specification leaving ample power for every port to be used at the same time.

I have a few hubs that I'm going to try using (don't have any miners yet), any ideas if these will work:

Belkin F4U041
http://www.belkin.com/uk/p/P-F4U041/
PSU: 5v 4A

Sipolar A200 20 Port USB hub
http://www.sipolar.com/page172.html?product_id=14
PSU: 20v 4.5A

Anker® USB 3.0 9-Port Hub
https://www.anker.com/products/variant/USB-3.0-SuperSpeed-10-Port-Hub-/68ANHUB-B10A
PSU: 12v 4A

I'm not sure if any of these will be any good, think the ports are limited to around 1amp

Anyone comment with any success stories with any of these & Moonlander?