Notably absent are any polyfuses or current measuring shunts — so there is no port over-power protection by the looks of it. I’m affraid to say who I am says: Some earlier hubs shared one TT amongst all ports to save cost — and on the rationale that older USB 1. But now more USB 3. Voltage drop will also occur over the back-feed prevention diode which is sometimes omitted in cheaper hubs. Sure I was offered a refund. If throughput is what matters, look into getting more controllers first!
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PS4 Motherobard CUH-10xxA SAA-001 Genesys Logic GL3520 IC USB 3.0 Hub Controller
Gll3520 drop will also occur over the back-feed prevention diode which is sometimes omitted in cheaper hubs. Proudly powered by WordPress. March 3, at 9: I’m affraid to say who I am says: If you are smart and quick, just request full refund from the Ebay shop that you got it from.
As for what hub you got, none of us can say since there are no photos of your hub. Good news, sort of — since Genesys Logic products seem to be fairly decent nowadaysbut early on in the USB 1. Possible I am the only one with eyes and able to see that output ports are plain USB 2.
But there was always one thing nagging me — while USB 3. April 18, at 8: December 4, at 6: It turned out I had an ancient Gsnesys 3.
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Yenesys first I thought the old driver caused the hub to enumerate on the wrong controller, but after reading your explanation about the HW appearing as two separate hubs, I realized it simply mapped as a USB2 hub on the USB2 hub tree of the same Renesas controller to which it was hooked up. So lets open it up. Cheap Unbranded 4-port USB 3. Aside from that, there were a few small solder splashes, but I removed the loose solder by hand before taking the photo.
This would be expected since USB 2. May 28, at 4: But there is an external power backflow prevention diode, and what appears to be a transistor to switch between bus and external power. Hubs can also have an impact on the performance of your older USB 1.
I guess we can put this down to cost cutting on behalf of the chipset makers and motherboard manufacturers — high speed USB 3. April 18, lkgic 9: June 17, at 6: A self-powered hub one with a transformer should be used in this case — but a low quality power supply or poor design of the hub can cause strange device issues or even power back feed issues as well.
The hub shown in the original blog post has USB 3. The case is black plastic, and there is one LED to indicate the presence of power to the hub bus or external jack.
Genesys Logic, Inc.
For the price, one cannot complain about it. Notably absent are any polyfuses or current measuring shunts — so there is no port over-power protection by the looks of it.
This means stuff attached to the other USB 3. When I connect anything USB 3. In order to do all of this as cheap as possible without breaking backwards compatibility — they had to introduce a new row of conductors buried inside the A connector and straddling on the side of the various types of B connectors creating cable-compatibility issues genwsys i.
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Before I actually review the device in question — we should probably review whether having a hub is a gendsys idea in the first place. If you hub stays USB2. I have device 05e3: December 4, at