LG ACB8300

The LG ACB8300 is a cheap monitor calibration utility. It is designed for LG monitors and is currently only supported by LG's True Color Pro software.

I bought such a device, even though I don't have a LG display. My initial thought was that the device was just another rebranded colorimeter - but it turned out it was wrong.

This page describes the USB protocol as well as the work towards integrating it into Argyll CMS.

The USB protocol consists of input reports and output reports, with a fixed length of 43 bytes. The host speaks first, the device responds (most of the time).

Send: 0x01
Response: 0x3

Send: 0x51
Response: 0x53

Send: 0x52
Response: 0x53

Send: 0x54
Response: 0x53

Send: 0x55
Response: 0x53

Send: 0x31
Response: 0x32

Send: 0x80
Response: 0x88

Send: 0x05
Response: 0x03

Whenever the button is pressed, the device sends 0x62.