Hey guys,
anyone know why issit that when I use a usb extension cable, altho only 0.8m, to connect to a usb 2 port hub, which is connected to a charger, the charging rate drops to trickle rate?
When I use the charging hub directly with the charger, charging rate was fine.
Is this due to the 0.8m resistance power drop along the extension cable, or what?
Would it be the same if I use a 90 degree usb male to female adapter?
Hello all,
My Umi z charger cable has broken. Tried charging with One plus 3T charger but it doesn't work.
Anybody can recommend what charger cable shall work and where it shall be available?
I have no problem charging with any mix if cable and charger ..even standard USB chargers with adaptor to c fitting
Any decent USB A to USB C cable should work.
Use Nexus's usb cable
I have a Nexus 6P and I use the tiny cable they gave with the phone to charge Z pro with my laptop.
It charges pretty quickly with that cable on my laptop. But yea any decent cable would do. You can also order chargers on Umi's website.
I use this cable...
https://www.amazon.de/gp/product/B01MY27YKY/ref=oh_aui_detailpage_o09_s01?ie=UTF8&psc=1
In principle, however, every cable should be suitable.
Make sure it is suitable for data transfer and loading.
Some cables have too much resistance, and then the charging time increases.
So I have the stock charger, a rather generic charge cable, a generic hdmi cable, and an Insignia NS-PU378CHM Usb-c to three port HDMI /USB 3.0 /USB-C power
The problem: when I hook up hdmi and am running DeX on my TV, the battery drains. Even with external power connected.
So I measure the current the charger is delivering, and when using the hdmi adaptor, I'm getting about 1/2 an amp. When I plug power in directly to the tablet, I get a full amp. Battery drains faster than it charges when using the adapter.
I don't know if I need a better charger, to suuply more current under load, a better hdmi adapter / power adapter, a better power cable (but the fact the cable supplies twice the current when plugged in directly suggests it isn't the cable).
Does anyone have a combo they use that keeps power from draining when running dex on hdmi?
Or should I figure it is impossible to supply enough current to keep the battery charged at 100% when running hdmi / dex?
Thanks,
Joe
drjoe1 said:
So I have the stock charger, a rather generic charge cable, a generic hdmi cable, and an Insignia NS-PU378CHM Usb-c to three port HDMI /USB 3.0 /USB-C power
The problem: when I hook up hdmi and am running DeX on my TV, the battery drains. Even with external power connected.
So I measure the current the charger is delivering, and when using the hdmi adaptor, I'm getting about 1/2 an amp. When I plug power in directly to the tablet, I get a full amp. Battery drains faster than it charges when using the adapter.
I don't know if I need a better charger, to suuply more current under load, a better hdmi adapter / power adapter, a better power cable (but the fact the cable supplies twice the current when plugged in directly suggests it isn't the cable).
Does anyone have a combo they use that keeps power from draining when running dex on hdmi?
Or should I figure it is impossible to supply enough current to keep the battery charged at 100% when running hdmi / dex?
Thanks,
Joe
Click to expand...
Click to collapse
Check out this link https://forum.xda-developers.com/ga...-usb-c-hub-t3917848/post79289417#post79289417 This should supply enough power while using Dex via HDMI!
I'm recopying this from the Galaxy 9 thread referenced above in the hope someone here has tried this adaptor...
This thread is pretty old, but I'm finally looking at upgrading and have some questions about the Ugreen UCB C / USB 3.1 + HDMI Adaptor.
I'm looking at the USB C - 5 Port Adaptor here:
https://www.amazon.com/UGREEN-Adapte.../dp/B077FZQS95
In the notes it says that
USB C PD fast charging is only for laptops but not for phones. Phones only support normal charging.
Do NOT recommend you charge phone through USB 3.0 port as USB port only can only offer max 1.5A current and will charge your phone slowly
So I'm trying to figure out, is this like a powered USB hub that needs a PD brick to power the hub and then the hub powers the tabled (with 1.5A max), and separately powers the HDMI adaptor, UCB 3.1 devices etc., or is this a power-pass through that powers the tablet (slow) and then the tablet powers the USB devices?
In other words, is there an advantage to buying a $20-30 PD wall brick to power this hub, which the tablet doesn't support, or am I as good as I'm going to get with the original Samsung Lightning charger that came with the tablet?
Thanks,
Joe
I bought one of the U-Green hubs rated for 100W PD:
https://www.amazon.com/gp/product/B07RW343WG/
This one has two USB 3.0 ports, a USB C charger-in port, HDMI, and two card readers, one full size SD, one micro-sd.
Because all of the documentation specifies it uses power delivery type chargers, I was worried it would have problems with a Samsung lightning charger. No problems. With the original lightning charger, the tablet recharges to and holds at 100% even when loaded by hdmi, an external hard drive, a USB thumb drive, and a micro sd card. The simpler / cheaper hub I bought when I got the tablet discharges when hdmi + the same charger is plugged in.
The reviews complained it gets hot enough to burn your finger when touched, but I haven't noticed this at all. This could be a function of the total power delivered to the hub I believe the lightning charger is only 15W. The hub is rated at 100W with PD cgarger. So only a fraction of the power is transmitted through the hub when charging with Samsung lightning charger. It seems most of the 100W is used to charge a PD laptop or Apple device, not the peripherals.
The one change I'd make to it, is that I'd like to have a spring loaded recessed slot for the micro sd card reader. In this hub, it is pushed in / pulled out of the slot leaving ~ 1/4 inch sticking out from the body of the reader when the micro sd card is loaded. If you leave the card in all the time (to use as an external hard drive) there will be a danger of the card snapping. A minor quibble.
I'm happy that it allows the tablet to maintain 100% charge while running hdmi.
Joe
I have been trying a couple of multiport adapters (USB-C, USB-A, HDMI) but while USB-A and HDMI seem to work fine, the charging port seems to do nothing. The tablet does not indicate it is being charged, and when connected to a PC there is no data connection.
There is a suspicious remark in the documentation:
Operation
• Connect the plug to a USB-CTM port on your computer.
...
At the time this manual was written, Android smartphones were not supported.
Click to expand...
Click to collapse
So is it possible that this adapter is not supported by our Tab S4? I would be surprised since I read here that other adapters do work.
For completeness, it is a Renkforce USB C naar HDMI + USB 3.0 Multiport-adapter.
sciurius said:
I have been trying a couple of multiport adapters (USB-C, USB-A, HDMI) but while USB-A and HDMI seem to work fine, the charging port seems to do nothing. The tablet does not indicate it is being charged, and when connected to a PC there is no data connection.
There is a suspicious remark in the documentation:
So is it possible that this adapter is not supported by our Tab S4? I would be surprised since I read here that other adapters do work.
For completeness, it is a Renkforce USB C naar HDMI + USB 3.0 Multiport-adapter.
Click to expand...
Click to collapse
Your description is confusing to me, and I had to translate the product description of your adaptor from Dutch to English, but...
Plug the USB C male connector from the adaptor into your tablet. Your adaptor has three ports:
1) USB 3.0 female - connect to a USB device such as a mouse, keyboard, thumb drive, etc. I'm not sure if you can connect this port to a PC or not.
2) HDMI female - hook to a display
3) USB C female - power input port only. Does not carry data. Does not connect to a PC. Plug your power supply into this port using the same cable that you charge your tablet with.. The charging icon should activate. Your tablet should stay charged while using the other ports, or at least discharge more slowly.
It sounds like you are trying to plug the charging port into a PC. Doesn't work as far as I know.
Thanks for the reply. This is what I do:
1. Plug the USB-C cable from the adapter into the tablet C port.
2. Plug HDMI cable (connected to a monitor) into the adapter HDMI port. This is detected, Samsung Dex starts, and the monitor displays the Dex desktop.
3. Plug keyboard/mouse into the USB-A port of the adapter. This is picked up by the tablet and I can use the keyboard/mouse.
Alternatively, when I plug a USB stick into the USB-A port of the adapter, the tablet shows a new USB storage device.
So far, so good.
4. I connect the Samsung power supply to the USB-C port of the adapter. Nothing happens. The tablet does not start charging (or discharging less). I tried different power supplies and cables, makes no difference.
When I connect the power supply with the same cable to the tablet it charges normally. When I connect the tablet using this cable to a PC hub the tablet also start charging, albeit slowy.
So as far as I can see I did nothing wrong. What suprises me most is that almost everything works fine, except charging.
I've ordered a new adapter (different brand) to see if this makes a difference.
I think it should work... I have a couple adaptors similar to yours and they all work. Particularly Insignia NS-PU378CHM I referenced above.
I do think that adaptors that say they support power delivery (PD) work better than cheaper generic adaptors. Even though the Tab S4 doesn't support
PD itself. I strongly recommend the Ugreen adaptor above.
Good luck,
Joe
I would have bought the Ugreen immedeately if they were easily available in this part of the world. Buying from Amazon is expensive and delivery is slow.
I got myself another multiport hub, brand A-Konic, and this time all three ports seem to work correctly. USB-C charging. USB-A OTG and HDMI. However, Samsung Dex on the monitor is only 1280x720 (on the S4 it is 2560x1600; the monitor is 1920x1080). Not sure if this is related to the hub.
I'm glad you found something that works. I don't know about screen resolutions. There are other threads that discuss HDMI resolution. I think the HDMI cable can make a big difference.
Take care,
Joe
drjoe1 said:
I think the HDMI cable can make a big difference.
Click to expand...
Click to collapse
Initially I got a distorted image on the screen but replacing the high quality cable by an even higher quality cable fixed that.
I'll check out the resolution info.
Samsung Galaxy Tab S4 working 100w adaptor ?
Hello I have the following question to all owners of samsung galaxy tab s4. I have a desire to buy the following docking stantion for my tablet. I have a question if it will work correctly.
USB C Hub, USB C Docking Station, QGeeM 12 in 1 Triple Display Type C Hub to Dual 4K HDMI & DP,USB C to USB Adapter,100W PD, Gigabit Ethernet, USB C Card Reader,USB Docking Station
Samsung Galaxy Tab S4 does it support thunderbolt ?
Will work seamlessly with a 100w adapter?
It will work but it won't use all its capacity. The tablet only can charge at 18w.
I am having good luck with the AUKEY 5-in-1 USB-C Hub, here is the AMZN link:
https://www.amazon.com/gp/product/B089M7WSHM/
It will give screen mirroring to TV. I have used it on both a 720p and a UHD (2160x3840) TV.
It can charge through the hub and use HDMI out and ethernet on the S4. I just wish it wouldn't try to make me setup DEX everytime I plug it in.
I was curious if anyone knows of a wireless USB C charger that has both male and female USB C that could allow the 4a to be charged either wired or wirelessly. The only way I can currently think of that would work would be connecting it to a USB C hub.
USB-C wireless charging receiver?
I have purchased two USB Type-C wireless charging receivers for use with a Pixel 4a and neither have worked. Both are recognised by the charging pads as the LED on the pad illuminates to show there is a device, however the phone shows no...
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