Steve's church is doing live stream using the Blackmagic ATEM Mini Pro. But he's having issues with the church's laptop, which is older keeping the stream going, while also powering a Powerpoint to project on the wall. Each will have different resolutions. Leo says that the projector is analog VGA, while the ATEM is HDMI out. The good news is that the ATEM has multiple HDMI ports. Leo suspects that the old laptop just has analog out.
Nick is a church media guy and his church bought several TVs that they'd like to double as computer monitors. They don't have any VGA inputs to connect to the computers, though.
Leo says that the TVs probably have HDMI connections, and he would need a VGA to HDMI converter which will cost about $30 at MonoPrice.
No, the USB is not for connecting to the TV. That's for viewing photos from a USB thumb drive. She'll need an HDMI connection, but her Dell Latitude doesn't have an HDMI out. Many laptops will have VGA out, and it's possible that her TV has a VGA input. This would work, but it isn't the best way to connect it because it's analog, not digital. Her laptop does have DisplayPort for video, though.