On Tue, 21 Mar 2023, Ted Mittelstaedt wrote:
Let me explain the nitty-gritty of these adapters.
Ted, Thank you. Very helpful.
DisplayPort was designed for use with passive (chipless) DP to HDMI cables and cable adapters. What happens is when you plug an HDMI cable into an adapter and the adapter into a DP, the chip in the video card senses that you are using an adapter and chances the signal from DP to HDMI or from DP to DVI depending on what adapter in use. This is referred to as multi-mode or DP++ technology.
Oh.
Generally going from DP to HDMI is not a problem UNLESS the adapter itself has bad contacts. I have a couple of those video adapters - look perfect, even looking inside with a magnifying glass the contacts look perfect, the connectors solidly lock, no evidence of bending strain on the cord - yet no signal whatsoever that goes through.
Since all the adapters on Amazon are from various Chinese companies I've no way to determine their quality. The Acer monitor has only HDMI input. The Radeon RX series have HDMI and DP ports so I won't need an adapter with the new card. Your extensive explanation is very much appreciated. Regards, Rich
