> For the complete documentation index, see [llms.txt](https://help.optimusflow.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.optimusflow.app/connections/connection-to-cqg.md).

# Connection to CQG

CQG offers 100 levels of market depth for indices and 10 levels for all other products, 3 years of historical data and fast execution are primary features of CQG.

## CQG for Existing Accounts

* Open connection manager, select CQG and specify the type of connection (Real). 

Before connecting to CQG with a live account, users must enable the exchanges they require access to within connection settings. Most exchanges will be enabled by default:

<figure><img src="/files/iDMLjEG3yNfp7ozZfIQ2" alt=""><figcaption></figcaption></figure>

* After your exchanges are enabled, enter your login and password and click **Connect.**


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