Connecting an old Samsung monitor (BN68-01570A-00) to a new iMac M4 2025

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Level 1

51 points

Connecting an old Samsung monitor (BN68-01570A-00) to a new iMac M4 2025

Hello all, I'll probably be receiving tomorrow my new iMac 25, M4 , 1 TB SSD, 16 GB memory and the other regular specs. It will replace the one I have working perfectly since 2013. This old one works with a 2nd monitor (mentioned above) connected via a VGA cable.

My idea is to do this connection in the new machine using a DVI cable and, just to see what would happen, I tried such today, with the old iMac replacing VGA by DVI, but it didn't work. Returning to the VGA connection, all returned to normal.

Do I need to set something in the Samsung monitor, so that it will work with DVI?

Thanks Paulo

iMac 21.5″, macOS 10.15

Posted on Oct 22, 2025 5:44 PM

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Answer 1

Oct 22, 2025 8:54 PM in response to pmonnerat

If I remember correctly, there are several DVI connection types,

https://itm-components.co.uk/blogs/news/what-are-the-differences-between-dvi-connectors-and-signals

Most DVI connections are "DVI-D (Single Link)" ones, which carry a digital signal and support resolutions of up to 1920x1200 pixels. But there are actually multiple types, including one that only carries an analog signal.

Are you sure that you were feeding the Samsung monitor the type of "DVI" signal it expects?

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Answer 2

kaz-k

Level 9

51,078 points

Oct 22, 2025 6:47 PM in response to pmonnerat

Hi,

You could connect your iMac M4 to your Samsung monitor via USB-4 to DVI adapter, if your monitor has DVI port.

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