This function is only working with Windows PC/Laptop which is designed with and has PgUP and PgDn keys. HDMI (designed with MHL function) and USB Mini-B connection are required from the projector to your Windows PC/Laptop.

Please follow below steps to fix it.
 

(1) Make sure your Windows device supports Miracast by checking the information that came with it
     or by going to the manufacturer's website.

(2) Check the firewall settings on your office PC: Please add a firewall rule with a source and
     destination for ports 7236, 53, 67, and 68 using the IP address 192.168.168.1 to allow screen
     mirroring.

(3) On your PC, make sure Wi-Fi is turned on.

(4) To remove the device, select Start > Settings  > Devices > Bluetooth & other devices.

(5) Move your Windows device closer to QP30 - QCast Mirror HDMI Wireless Dongle

Please follow the below troubleshooting steps to fix the problem.

1. Please disable Legacy Wi-Fi mode in the advanced settings menu for QP30.
2. If the problem persists after step 1, scan the network status with a Wi-Fi channel analyzer and
    make sure that not too many devices are allocated to the same channel.

Streaming media is not supported on BenQ QP30 due to Digital rights management (DRM).

USB-C chargers provide the Power Delivery protocol but QP30’s USB-C does not support Power Delivery protocol. Please use a USB-A charger and connect it to QP30 via the USB-A-to-USB-C cable. 

The maximum distance supported by the wired remote control is 10 meters.

Regarding the CEC (Consumer Electronics Control) functionality on BenQ projectors. We understand your expectation for full bi-directional CEC support. However, after careful consideration of usage scenarios, we have designed our projector to limit CEC control to one-way communication.

This approach helps avoid unintended behaviors such as powering on all connected source devices simultaneously when the projector sends a CEC power-on command. In certain setups, this could cause user inconvenience or confusion. Additionally, it is important to note that not all source devices respond consistently to CEC commands—some may ignore power-on signals altogether.

We truly appreciate your understanding, and we will continue to work on the possible implementation of bi-directional CEC features in future updates and models. Should you have any further questions or suggestions, please feel free to reach out.

High-brightness projectors are engineered to deliver exceptional luminance, making them ideal for environments with strong ambient light, such as large conference rooms, auditoriums, or outdoor settings. 

Achieving this high brightness often involves technical trade-offs that can influence color reproduction.For users who are more sensitive to color accuracy, we recommend choosing the medium Lumens projectors with pure RGB color source and high color space such as our W4000i, W2720i and W5850, or you may provide us with the usage scenario and we’ll recommend the most suitable model for you.

We continuously strive to improve our products by integrating advanced technologies that enhance both brightness and color accuracy. Thank you for your understanding and continued trust in our products.

Streaming media is not supported on BenQ QP30 due to Digital rights management (DRM).

USB-C chargers provide the Power Delivery protocol but QP30’s USB-C does not support Power Delivery protocol. Please use a USB-A charger and connect it to QP30 via the USB-A-to-USB-C cable. 

The maximum distance supported by the wired remote control is 10 meters.

It’s possibly due to the Firewall setting on your office PC/laptop. Pleaseadd a firewall rule with a source and destination port of port 7236, 53, 67, and 68 with IP address 192.168.168.1 to allow screen mirroring.

If the network you would like to use is 2.4GHz, please turn on Legacy mode on QP30. Otherwise, please switch your router to Band 1 if the network you would like to use is 5Ghz for network connection.

It’s possibly due to the Internet speed or Wi-Fi channel. Flickering could be improved if you connect the QP30 to faster Internet and to a Wi-Fi channel which is less crowded, or stop other applications which consume more bandwidth of your Internet.

Please check the following settings to correct this issue. 

1. If the source gives the correct 3D information to the projector, the projector will switch to 3D automatically.
   If your source is from PC or steaming content, please select the correct 3D format via OSD Display > 3D > 3D mode.
2. Check the user manual and make sure that the resolution of your content supports 3D.
3. Press the DLP Link button on your 3D glasses to resync the projector and 3D glasses.
4. Please try to change the HDMI EDID setting to Standard.
5. Make sure that no other Projectors are sending DLP Link signals in the same room.
6. Watching in a relatively dark environment to avoid being influenced by other light sources.
7. Check the battery level on your DLP 3D Glasses
8. Adjust the watching distance and screen size within a normal range(Specs)
9. Stay in a fixed position, and try not to move too far/quickly on your head/3D glasses.
10. Try to adjust a colorful setting on the projector and avoid external light direct to your 3D glasses/screen.
11. If it's still not working, the issue might be caused by Hardware margin. You can switch to another projector or 3D glasses for a try.

Regarding the CEC (Consumer Electronics Control) functionality on BenQ projectors. We understand your expectation for full bi-directional CEC support. However, after careful consideration of usage scenarios, we have designed our projector to limit CEC control to one-way communication.

This approach helps avoid unintended behaviors such as powering on all connected source devices simultaneously when the projector sends a CEC power-on command. In certain setups, this could cause user inconvenience or confusion. Additionally, it is important to note that not all source devices respond consistently to CEC commands—some may ignore power-on signals altogether.

We truly appreciate your understanding, and we will continue to work on the possible implementation of bi-directional CEC features in future updates and models. Should you have any further questions or suggestions, please feel free to reach out.

High-brightness projectors are engineered to deliver exceptional luminance, making them ideal for environments with strong ambient light, such as large conference rooms, auditoriums, or outdoor settings. 

Achieving this high brightness often involves technical trade-offs that can influence color reproduction.For users who are more sensitive to color accuracy, we recommend choosing the medium Lumens projectors with pure RGB color source and high color space such as our W4000i, W2720i and W5850, or you may provide us with the usage scenario and we’ll recommend the most suitable model for you.

We continuously strive to improve our products by integrating advanced technologies that enhance both brightness and color accuracy. Thank you for your understanding and continued trust in our products.

This function is only working with Windows PC/Laptop which is designed with and has PgUP and PgDn keys. HDMI (designed with MHL function) and USB Mini-B connection are required from the projector to your Windows PC/Laptop.

Please follow below steps to fix it.
 

(1) Make sure your Windows device supports Miracast by checking the information that came with it
     or by going to the manufacturer's website.

(2) Check the firewall settings on your office PC: Please add a firewall rule with a source and
     destination for ports 7236, 53, 67, and 68 using the IP address 192.168.168.1 to allow screen
     mirroring.

(3) On your PC, make sure Wi-Fi is turned on.

(4) To remove the device, select Start > Settings  > Devices > Bluetooth & other devices.

(5) Move your Windows device closer to QP30 - QCast Mirror HDMI Wireless Dongle

Please follow the below troubleshooting steps to fix the problem.

1. Please disable Legacy Wi-Fi mode in the advanced settings menu for QP30.
2. If the problem persists after step 1, scan the network status with a Wi-Fi channel analyzer and
    make sure that not too many devices are allocated to the same channel.