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Relocate ServiceInfo models (#2532)

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---
author: epenet
authorURL: https://github.com/epenet
title: "Relocate dhcp/ssdp/usb/zeroconf ServiceInfo models"
---
### Summary of changes
To reduce current reliance on optional integrations for names that are in essence used as helpers, the following ServiceInfo models have been relocated:
- `DhcpServiceInfo` from `homeassistant.components.dhcp` to `homeassistant.helpers.service_info.dhcp`
- `SsdpServiceInfo` from `homeassistant.components.ssdp` to `homeassistant.helpers.service_info.ssdp`
- `UsbServiceInfo` from `homeassistant.components.usb` to `homeassistant.helpers.service_info.usb`
- `ZeroconfServiceInfo` from `homeassistant.components.zeroconf` to `homeassistant.helpers.service_info.zeroconf`
To update your integration:
1. Replace the import statements as shown in the examples below
2. Test your integration with the new imports
The old import locations are deprecated and will be removed in Home Assistant 2026.2.
### Examples
```python
# Old
# from homeassistant.components.dhcp import DhcpServiceInfo
# from homeassistant.components.ssdp import SsdpServiceInfo
# from homeassistant.components.usb import UsbServiceInfo
# from homeassistant.components.zeroconf import ZeroconfServiceInfo
# New
from homeassistant.helpers.service_info.dhcp import DhcpServiceInfo
from homeassistant.helpers.service_info.ssdp import SsdpServiceInfo
from homeassistant.helpers.service_info.usb import UsbServiceInfo
from homeassistant.helpers.service_info.zeroconf import ZeroconfServiceInfo
class MyConfigFlow(ConfigFlow, domain=DOMAIN):
"""Handle a config flow."""
async def async_step_dhcp(self, discovery_info: DhcpServiceInfo) -> ConfigFlowResult:
"""Handle dhcp discovery."""
...
async def async_step_ssdp(self, discovery_info: SsdpServiceInfo) -> ConfigFlowResult:
"""Handle ssdp discovery."""
...
async def async_step_usb(self, discovery_info: UsbServiceInfo) -> ConfigFlowResult:
"""Handle usb discovery."""
...
async def async_step_zeroconf(self, discovery_info: ZeroconfServiceInfo) -> ConfigFlowResult:
"""Handle zeroconf discovery."""
...
```