Why there is no image on display monitor after connect to 1.4V HDMI cable
Firstly ensure that transmits image resolution & refresh rate are not higher than 3840*2160@30Hz/1920*1080@60Hz and the display adapter driver is correct , the display is open with HDMI signal source.
Secondly please connect the HDMI cable to the discrete graphics(if any) HDMI interface, if without discrete graphics, please replace other brand HDMI cable to operate under the same configuration. If it still doesn't work, please try to change the display.
All of the above, If this does not resolve your problem, please contact Email:vcomnet@vcom.hk to get professional advice.
Why there is only image output no audio output after connect to HDMI cable
Firstly please make sure that it is buildt in Speaker type display and the HDMI cable connect to the audio & video output interface correctly.
Secondly make sure that the display adapter driver is correct, and then you need to set the audio output as the HDMI output signal.
All of the above, If this does not resolve your problem, please contact Email:vcomnet@vcom.hk to get professional advice.
Why the monitor will become splash screen and video corruption after connecting the HDMI cable?
First, please confirm that there is no problem of the monitors and outputs, the graphics driver is stable. And then, please check the connection of the HDMI cable whether it could satisfy with the version of monitors and outputs.
All of above is ok, the splash screen and video corruption are likely due to HDMI cable’s signal attenuation or insufficient bandwidth on the network. So please replace old one into a new HDMI cable. If the question is still happen after changing new cable, please try to change the monitor to find out what happen.
Please contact vcomnet@vcom.hk to get professional advising, if the question is still couldn’t be solved.
What does the HDMI version mean?
In the past the HDMI version number (for instance 1.3b or 1.4a) was used to mark cable products. This is not allowed any more because often suppliers marked products with wrong HDMI versions. The result was that customers often bought products in the believe that certain HDMI features are supported which was not always the case.
 
HDMI cables are only produced according to the following 4 HDMI cable specifications:
 
    • HDMI
    • Highspeed HDMI
    • HDMI with Ethernet
    • Highspeed HDMI with Ethernet
 
Please note that the a.m. HDMI cable specifications do not guarantee that a specific HDMI version is supported by every HDMI cable supplier/ trader. With KabelDirekt HDMI cables you are on the safe side that always the newest HDMI version is supported.
 
KabelDirekt HDMI cables are produced according to the standard Highspeed HDMI with Ethernet and are fully compatible with HDMI 2.0 (all available HDMI features as well as resolutions up to 4K in 3D are supported). The bandwidth of KabelDirekt HDMI cables is 18,2 GigaBit/ second.
What is HDMI 2.0b
HDMI 2.0b is backwards compatible with earlier versions of the HDMI specification and the most recent update of the HDMI specification. Also enables key enhancements to support market requirements for enhancing the consumer video and audio experience.
 
What are the key advanced features enabled by HDMI 2.0b?
•Simultaneous delivery of dual video streams to multiple users on the same screen
•Simultaneous delivery of multi-stream audio to multiple users (Up to 4)
•Enables transmission of High Dynamic Range (HDR) video
•CEC extensions provide more expanded command and control of consumer electronics devices through a single control point
•Bandwidth up to 18Gbps
•4K@50/60 (2160p), which is 4 times the clarity of 1080p/60 video resolution
•Up to 32 audio channels for a multi-dimensional immersive audio experience
•Up to 1536kHz audio sample frequency for the highest audio fidelity
•Support for the wide angle theatrical 21:9 video aspect ratio
•Dynamic synchronization of video and audio streams
 
Current High Speed cables (Category 2 cables) are capable of carrying the increased bandwidth. HDMI 2.0b does not define new cables or new connectors. 
What's new in HDMI 2.0
2.0 Version increases bandwidth to 18Gbps significantly. Also includes the following advanced features:
•Up to 1536kHz audio sample frequency for the highest audio fidelity
•Up to 32 audio channels for multi-dimensional immersive audio experience
•Resolutions: Up to 4K@50/60 (2160p), 4 times the clarity of 1080p/60 video resolution, for the ultimate video experience
•Dynamic synchronization of video and audio streams
•Support for the wide angle theatrical 21:9 video aspect ratio
•Simultaneous delivery of multi-stream audio to multiple users (Up to 4)
•Simultaneous delivery of dual video streams to multiple users on the same screen
•CEC extension provide more expanded command to control consumer electronics devices through a single control point
Host USB-C Port Capability: Power, Data, and Video
Some computers such as the Lenovo Yoga 910 have more than one USB-C port and they have different functions. The picture below shows that one USB-C port (left) is a charging only port while the other USB-C port (right) supports video and data. Please make sure to plug in your USB-C adapter or docking station to the right USB-C port.
 
Some USB-C ports have the Thunderbolt technology built in to achieve all features offered by USB-C as well as higher data transfer rate and additional features offered by the Thunderbolt technology. Thunderbolt 3 ports support data, video and charging and usually have the Thunderbolt logo printed next to them. Below picture shows a Thunderbolt enabled USB-C port.
 
Below picture shows two USB-C ports on a Windows laptop. One USB-C port (left) supports Thunderbolt 3 and therefore offers the video, data, and charging capability. The other USB-C port (right) only supports data and charging without video capability. Please make sure to connect your USB-C / Thunderbolt 3 adapters and docks to the Thunderbolt 3 port on your laptop.
 
USB-C adapters and docks will work fine when plugged into a Thunderbolt 3 port on a laptop. However Thunderbolt 3 adapter and docks will not work when plugged into a USB-C port without the Thunderbolt capability. Refer to the article below for the list by manufacturer of computers that support Thunderbolt 3. Please contact the laptop manufacturer directly if you are not sure what kind of USB-C port your laptop has.
List of Devices Supporting Video & Power over USB-C
Not all USB-C ports support all features of USB-C. Some computers and smartphones support data only for flash drives while some others support video out and power as well.
Here is the list by manufacturer of computers and smartphones that support full feature USB-C:
Dell
Dell XPS 12 9250, 13 9350 / 9360 / 9365 / 9370, 15 9550 / 9560 / 9570 / 9575, Latitude 5290 / 5480 / 5580 / 7275 / 7280 / 7285 / 7290 / 7370 / 7380 / 7390 / 7480 / 7490 / 7520 / 7720 / E5570, Precision (certain configurations) 3520 / 15 3510 / 5510 / 5520 / M7510, 17 M7710, Alienware 13 / 15 / 17
Apple
2016 / 2017 / 2018 MacBook, MacBook Pro, iMac, iMac Pro
Acer
Aspire Switch 12 S / R13, V15 / V17 Nitro, TravelMate P648, Predator 15 / 17 / 17X, Chromebook R 13
ASUS
ROG GL / G5 / G7 / GX / Strix, ZenBook Pro UX501VW, ZenBook 3 Deluxe / Pro, Transformer 3 Pro, Schenker XMG, Q524UQ 2-in-1 15.6, Chromebook Flip C302
Gigabyte
Aorus X5 15, X7 DT 17, BRIX / BRIX S
EVGA
SC15 / SC17 Geforce GTX 1060
Google
Pixelbook / Pixelbook 2
HP
Elite X2 1012 G1 / G2, Z1 Workstation G3, Spectre 13.3 / x360, EliteBook 1040 G4 / X360 G2 / X 360 1020 G2 / Folio G1, ZBook 17 G3 / 17 G4 / 15 G3 / 15 G4 / Studio G3 / Studio G4 / Z2 G4 / Z4 G4 / Z6 G4 / Z8 G4, Chromebook 13 G1
Lenovo
Legion Y720, IdeaPad Y900, Miix 720, Thinkpad P 50/70, T 470 / 470S / 570, X270, X1 Carbon, X1 Yoga, Yoga 370 / 900 / 910, P50 / P51 / P51S / P70 / P71
MSI
Phantom / Phantom Pro, Ghost / Ghost Pro, Stealth / Stealth Pro, Titan / Titan Pro, Dominator / Dominator Pro, Vortex G65
Razer
Blade / Stealth / Pro
Samsung
NP900X5N, Notebook Odyssey, Notebook 9 15 Inch, Galaxy Note 9 / Note 8 / S9 / S9+ / S8 / S8+
HTC
HTC 10 / U11 / U12
LG
Gram 15Z970, LG G5 / V20 / V30
Intel
NUC6i7KYK / NUC7i5BNH / NUC7i5BNK / NUC7i7BNH / NUC6i7KY
Toshiba
Portege X20W / X20E / X30 / X30-E, Tecra X40 / X40E
Sony
VAIO S11
Clevo
P 750DM / 770DM / 870DM
FUJITSU
Workstation CELSIUS H760
Microsoft
Surface Book 2, Surface Go, Lumia 950 / 950 XL
Zotac
ZBOX / MI549 / MI552 / MI572 / MI553
Huawei
MateBook X Pro