> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/boomerang-3-domain-administrator-manual/admin/infrastructure/infrastructure__uninstalled_gateways.md).

# Uninstalled Gateways

The Uninstalled Gateways (UG) list is created by the system based on POST's from gateways that are not installed in the system i.e. which do not exist in the Gateways list. If the system receives a POST from a gateway with MAC address that is not yet present in Gateways list, it adds a row into the UG list with Name (if available), MAC address, GW type and timestamp that is the time when the last POST was received from the gateway.

![](/files/HCMdIF1t6rKxBmJLL24d)

There are three icons on the right-hand side of the row. Their functions are described in the table below.

<table><thead><tr><th width="115.5">Icon</th><th>Function</th></tr></thead><tbody><tr><td><img src="/files/Ky2sBDLdbrrzjyATWNx6" alt=""></td><td>Opens the Create Gateway form prefilled with the values received from the gateway. The user can fill in all the details and promote it to installed Gateway.</td></tr><tr><td><img src="/files/JmDmBCrxYog1a3kETwW5" alt=""></td><td>Permanently deletes the uninstalled gateway from the list. If the gateway still posts to the system, it will appear in the list again.</td></tr><tr><td><img src="/files/jskZGG6pc0JjRZ1hrCOq" alt=""></td><td><p>Marks the uninstalled gateway as “Not in use”. The gateway is not visible in the UG list. </p><p>Click “Show not in use gateways” to show the “Not in use” gateways.   </p><p><img src="/files/XnTRE8zawpnlXJTWnUdR" alt="" data-size="original"></p><p>When "Show not in use gateways" is enabled, the "Not in use" gateway(s) are visible and can be either promoted to installed Gateways or deleted permanently.</p></td></tr></tbody></table>


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