Acer T231H - Manual (Page 19)

EN-18
Product information
1 Press the MENU key to bring up the OSD.
2 Using the / keys, select
Information from the OSD. Then the
basic information of LCD monitor will show up for current input.
1920 x 1080
H: 67 K Hz V: 60 Hz
VGA Input
S/N:ETL53091326350380B3742