Thanks for joining our forums and for asking about our products. I have reviewed the details for the Lenovo Flex 5(1470) and the Flex 5-14ARE05 version and see that these devices have USB-C ports but they are data-only ports. Therefore your computer wouldn’t support the necessary requirements to work with our USB-C based docks and would only be compatible with our USB 3.0 based docking stations which can offer a maximum refresh rate of 60Hz.
To add a 4K HDMI television to your computer I would recommend our UD-6950H so I’ve listed that dock below. To use a VGA monitor with this dock you would need to use an active HDMI to VGA adapter so I’ll list that adapter below too.
Plugable UD-6950H - USB 3.0 Dual 4K Display Horizontal Docking Station
Amazon link - https://www.amazon.com/dp/B07CRSH25X
Plugable link - https://plugable.com/products/ud-6950h
Plugable HDMI-VGA - HDMI to VGA Active Adapter
Amazon link - https://www.amazon.com/dp/B00H4J5B9U
Plugable link - https://plugable.com/products/hdmi-vga
I hope this information helps and please let us know if you have any questions.