> 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 technology provides access for trading futures and options on CME, CBOT, NYMEX, COMEX, EUREX, ICE, and CBOE.

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="https://3544171604-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LvquTYs4Kw8odYPu7JS%2Fuploads%2Fkiz7sGvaMmgnd5HUrSzx%2Fimage.png?alt=media&amp;token=73dda97d-2629-48f9-a0a2-4bd78a29c01d" alt=""><figcaption></figcaption></figure>

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