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Anker 7-in-1 USB-C to HDMI Hub w/ 100W PD, microSD/SD Card Reader + 2x USB 3.0 EXPIRED

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AnkerDirect via Amazon has Anker 7-in-1 USB C to HDMI Hub w/ 100W PD, microSD/SD Card Reader + 2x USB 3.0 on sale for $26.99 > now $25.49. Shipping is free. Thanks doboy007
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Edited October 6, 2020 at 05:50 AM by
After 10% coupon. About $0.50 more than previous deal. Coupon NLA, Now $25.49

https://www.amazon.com/gp/product...VXLJ&psc=1
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USB 3.2 bandwidth can't support 4K @ 60 and support all those other connections at USB 3 speed at the same time. They could be claiming 60 Hz when other connections are using usb 2 speed. You believe what you want cause this is just waste of my time.
USB 3.2 (USB-C) peak theoretical data rate is 10 Gbps. 4K60p 4:4:4 (uncompressed) requires 17.82 Gbps without HDR (8 bit BT. 709 color). It is not possible to connect an RGB monitor at 4K60p unless it is being used in a TV mode with chroma sub-sampling such as 4:2:0 (4x compression).

So you are both correct. 4K60p output is possible with 4x chroma compression, but in general you would not want a computer monitor connected this way though it would be fine for a 4K TV.

As FYI TB3 peak theoretical rate is 40 Gbps. TB3 is included in the USB 4.0 spec.
Limitation due to bandwidth.

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#3
30fps HDMI port is a bummer.
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#4
Quote from llsethj
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30fps HDMI port is a bummer.
Limitation due to bandwidth.
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09-12-2020 at 11:26 PM
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#6
Quote from SniperSheep
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Bandwidth of what, exactly?

And how is this adapter [amazon.com] able to support 60Hz 4K over the same connection?
Refer to some discussion on second page

https://slickdeals.net/f/14336522-usb-c-hub-aukey-8-in-1-type-c-adapter-with-ethernet-port-for-29-63?src=SiteSearchV2Algo1
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09-13-2020 at 12:25 AM
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#8
Quote from SniperSheep
:
That's all well and good, yet the product I linked has BOTH 4K @ 60Hz and USB 3 port.
And that product costs more than this so it seems like the more expensive unit supports Thunderbolt 3 specs. If your computer doesn't have TB3 then you won't get 4K @ 60.
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09-13-2020 at 02:10 AM
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#10
Quote from SniperSheep
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Yes it costs more, but no, I don't see any requirements for TB3. Based on their compatibility list, I surmise that what this requires is Alternate Mode support on USB-C port. So, AFAIK, it's a matter of using more expensive chipset to enable 4K @ 60Hz and not a matter of USB-C bandwidth.
USB 3.2 bandwidth can't support 4K @ 60 and support all those other connections at USB 3 speed at the same time. They could be claiming 60 Hz when other connections are using usb 2 speed. You believe what you want cause this is just waste of my time.
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Last edited by doboy007 September 13, 2020 at 09:01 AM.
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#12
Quote from SniperSheep
:
Yes it costs more, but no, I don't see any requirements for TB3. Based on their compatibility list, I surmise that what this requires is Alternate Mode support on USB-C port. So, AFAIK, it's a matter of using more expensive chipset to enable 4K @ 60Hz and not a matter of USB-C bandwidth.
USB 3.2 (USB-C) peak theoretical data rate is 10 Gbps. 4K60p 4:4:4 (uncompressed) requires 17.82 Gbps without HDR (8 bit BT. 709 color). It is not possible to connect an RGB monitor at 4K60p unless it is being used in a TV mode with chroma sub-sampling such as 4:2:0 (4x compression).

So you are both correct. 4K60p output is possible with 4x chroma compression, but in general you would not want a computer monitor connected this way though it would be fine for a 4K TV.

As FYI TB3 peak theoretical rate is 40 Gbps. TB3 is included in the USB 4.0 spec.
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#13
Quote from wysiwyg1652
:
USB 3.2 (USB-C) peak theoretical data rate is 10 Gbps. 4K60p 4:4:4 (uncompressed) requires 17.82 Gbps without HDR (8 bit BT. 709 color). It is not possible to connect an RGB monitor at 4K60p unless it is being used in a TV mode with chroma sub-sampling such as 4:2:0 (4x compression).

So you are both correct. 4K60p output is possible with 4x chroma compression, but in general you would not want a computer monitor connected this way though it would be fine for a 4K TV.

As FYI TB3 peak theoretical rate is 40 Gbps. TB3 is included in the USB 4.0 spec.
You're right on the bandwidth issue, which is why most of these hubs use either Thunderbolt 3 or DisplayPort (Alternate Mode). My guess is that the other Anker hub I linked uses Alternate Mode to deliver 4K @ 60Hz @ 4:4:4 (via an internal DP-to-HDMI conversion), which leaves you with 2 lanes to deliver USB 3.1 ports over. Alternate Mode for DP 1.4a (circa 2018) uses 4 lanes to deliver 25.92Gbps.

Some USB-C hubs specifically mention that they require support for Alternate Mode, but some don't. Doesn't mean that's not how they work.
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#14
I hope these adapters could has longer cable. There are few adapter with 3ft cable, or with detachable cable, but price range 35~45.
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