Eufy NVR Security System S4Max. Channels 8-Port PoE(Up to 16CH) 8-Port PoE(Up to 16CH) 8-Port PoE(Up to 16CH) 8-Port PoE(Up to 16CH) Requires eufy NVR to Operate Requires eufy NVR to Operate. Storage Built-In 2TB HDD, Up to 16TB Built-In 8TB HDD, Up to 16TB Built-In 4TB HDD, Up to 16TB Built-In 2TB HDD, Up to 16TB Requires eufy NVR to Operate Requires eufy NVR to Operate.
