Acer H236HL Service Manual page 47

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7.2 Connection:
7.3 Writing VGA and HDMI Process:
S1.Double-click
S2. Prepare the EDID written. Change the EDID files name as below rule.
Anolog EDID wA.dat
DVI EDID wD.dat
HDMI2 EDID wH.dat
S3. Copy WA.dat to one folder named as ACER S230WL which must contains "config.ini" file.
S4. Copy ACER S230WL to DDC folder and put DDC and ISP tool together.
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to install it. And restart PC after installation.