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doboy007 59.3K Views
Sep 12, 2020 5:57 PM

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

$26

$36

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+ Free Shippingat Amazon
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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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Written by doboy007
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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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doboy007
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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.
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wysiwyg1652
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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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doboy007
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Limitation due to bandwidth.
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52 Comments

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Sep 12, 2020 9:07 PM
36 Comments
Joined Nov 2013
llsethjSep 12, 2020 9:07 PM
36 Comments
30fps HDMI port is a bummer.
7
Original Poster
Sep 13, 2020 6:12 AM
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doboy007
Original Poster
Sep 13, 2020 6:12 AM
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Quote from llsethj View quoted comment :
30fps HDMI port is a bummer.
Limitation due to bandwidth.
1
Sep 13, 2020 6:26 AM
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Original Poster
Sep 13, 2020 7:22 AM
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doboy007
Original Poster
Sep 13, 2020 7:22 AM
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Quote from SniperSheep View quoted comment :
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
1
Sep 13, 2020 7:25 AM
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Original Poster
Sep 13, 2020 7:30 AM
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doboy007
Original Poster
Sep 13, 2020 7:30 AM
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Quote from SniperSheep View quoted comment :
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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Sep 13, 2020 9:10 AM
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Original Poster
Sep 13, 2020 3:58 PM
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doboy007
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Sep 13, 2020 3:58 PM
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Quote from SniperSheep View quoted comment :
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.
Last edited by doboy007 September 13, 2020 at 09:01 AM.
Sep 13, 2020 5:26 PM
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Sep 13, 2020 11:48 PM
200 Comments
Joined Dec 2011
wysiwyg1652Sep 13, 2020 11:48 PM
200 Comments

Our community has rated this post as helpful. If you agree, why not thank

Quote from SniperSheep View quoted comment :
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.
2
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Sep 14, 2020 12:02 AM
922 Comments
Joined Apr 2008
SniperSheepSep 14, 2020 12:02 AM
922 Comments
Quote from wysiwyg1652 View quoted comment :
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.
6
Sep 14, 2020 2:59 AM
789 Comments
Joined Dec 2012
hollytreeSep 14, 2020 2:59 AM
789 Comments
I hope these adapters could has longer cable. There are few adapter with 3ft cable, or with detachable cable, but price range 35~45.
Sep 14, 2020 12:54 PM
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Joined Nov 2011

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Sep 14, 2020 1:54 PM
863 Comments
Joined Mar 2008
Mr.EnigmaSep 14, 2020 1:54 PM
863 Comments
I got it from the previous deal and so far, it's a decent hub for $27.

I'm using a 60w PD charger with it which ended up being a bit disappointing. My laptop is only getting 45w.

Even when I don't hook up the hub to my desktop, the hub cannot seem to delivery fast charge to my phone at all. I tested with a second one of the same hub, same result.
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Sep 14, 2020 3:14 PM
463 Comments
Joined Nov 2017
petem9110Sep 14, 2020 3:14 PM
463 Comments
Quote from wysiwyg1652 View quoted comment :
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.
DP Alt mode doesn't use USB bandwidth in the sense that it goes through the USB protocol. Depending on how many lanes in the USB C cable/connector it uses, it limits the USB bandwidth (USB 2.0 for 4k60p). So DP Alt mode is not limited to 10 Gbps, it can do full 4k60p uncompressed 4:4:4, also Thunderbolt 3 is not required, this is all in the USB spec. https://www.anandtech.com/show/85...-announced [edit: this is a more direct explanation: https://www.totalphase.com/blog/2...-c-cable/]

I myself am running RGB 4:4:4 4k 60p on a different hub.
Last edited by petem9110 September 14, 2020 at 08:26 AM.

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