NVR with POE but need more voltage

[Dwellonroof]

I have a Hikvision NVR DS-7608NI-SE/8P with POE and am wanting to purchase a Dahua SD49225T-HN but I'm thinking the NVR doesn't have enough power to power it.
I also have 2 other Dahua cameras connected on it.
I thought about an POE injector/splitter but am afraid it might backfeed voltage?? otherwise run a seperate power cord but since I am wanting to use the nvr would that backfeed?
This is the power specs of the camera:
Power SupplyC 12V/3A, PoE+(802.3at)
Power Consumption:13W,20W (IR on)
Anyone with ideas or in the same type situation?
If not I'm guessing I would have to run a seperate line from my router.

 

[looney2ns]

I have a Hikvision NVR DS-7608NI-SE/8P with POE and am wanting to purchase a Dahua SD49225T-HN but I'm thinking the NVR doesn't have enough power to power it.
I also have 2 other Dahua cameras connected on it.
I thought about an POE injector/splitter but am afraid it might backfeed voltage?? otherwise run a seperate power cord but since I am wanting to use the nvr would that backfeed?
This is the power specs of the camera:
Power SupplyC 12V/3A, PoE+(802.3at)
Power Consumption:13W,20W (IR on)
Anyone with ideas or in the same type situation?
If not I'm guessing I would have to run a seperate line from my router.

That NVR will handle that camera.

 

[Dwellonroof]

That NVR will handle that camera.

Thanks, I wasn’t sure