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I’ve got some extended question to these adapters.
First, I’d wish you used the power from supplied from the displayport side (3.3v 500mA) instead of the awkward extra USB wire. Also I wish they were designed to plug near the DP end, not the HDMI end. Are there any technical reasons for the way it is done?
2nd, will this work between non HDCP compliant devices? I find other brands are not able to do that, because it appeas as if the adapter presents itself as HDCP compatible without even asking the monitor, ending up with no image, even if the source allows non HDCP output. AppleTV is a great source for testing this, as it will send image and allow some apps on non HDCP compliant sinks, and put an error message up on the screen if it needs to. A bad adapter will prevent this.
3rd and last, can the firmware be upgraded from either end? Finding a repeatable device seems to be hard, and it would be nice if they can be upgraded to behave the same way.
MST1407
Not sure i understand the first part / question :-S
The adapter cannot take power from DP Display output to feed the adapter chips on other end of that signal line.
This adapter should not play a part in determining if a signal with or without HDCP will be shown. It has a reapeater for HDCP 1.4, so if an HDCP signal is send to the adapter it will just forward it.
Normally active adapters like this can only be updated from source side, so in this case the HDMI side. I will double chekc on this one, but cannot imagine you can update it from the “transmitter-side”.
ost
To clearify the first part. All DP ports supply power, both the receiving end and the transmitting end. This allows for much practical active adapters than on HDMI where only the transmitter can supply power. This is why it makes more sense to put this type of adapter at the receiving end, where you have approx 1.5W of power available on a short wire, vs HDMI output where you can harvest approx 250mW. This is also why there is a need for additional power at higher pixelrates. I know Lindy has an adapter probably based on the same STDP2600 chip but stuck to the receiving end. I know their adapter (the one I got, with no information about FW) can not manage non HDCP properly, so I was hoping for something that could. Also I have tested a lot of different brands, but they all suffer from weird bugs, and no version traceability. I have not tested the CAC-x330 yet. They are hard to find in stock!
MST1407
Hello
where do you see that CAC-2330 it is limited to 225Mhz?
Jelen
Hello, I have video card with HDMI 2.0 and my FullHD monitor has DP 1.2. Can I use this adapter to run the monitor at 1920x1080p @120 Hz?
ost
I found 225Mhz at your amazon pages..
“Support HDMI 225MHz/Gbps per channel bandwidth”
I guess this specs is wrong then?
Any news on the update? Can it be updated at all?
MST1407
Hi Ost,
Sorry for the delay i am waiting for feedback for factory, will get back to you as soon as have feedback for your questions.
MST1407
Hi Jelen,
Yes this product supports 1920×1080 at 120Hz.
Hello, I am looking for an adapter to use it for hdmi2.0 to DP 1.2 on a solution 1440p (2560×1440)@144hz(120hz would also be ok) is this possible with the CAC-2330?
MST1407
Hello Tyduss, no that won’t go.
The CAC-2330 supports HDMI 1.4 and that has a bandwidth limitation of 10.2 Gbps
A resolution of 2560×1440 at 120 Hz would need 13.27 Gbps. So “no go”.