C225 64 Channel 4K PoE Security Camera System for Business Cameras:64 Is the hard drive already

Is the hard drive already installed

This 4K 8 Ports NVR can be upgraded to 16 channel with a PoE switch connected(Not included)

How does the system manage recording and storage

Built-in mic can pick up clear audio up to 33ft away

Can this device connect to wifi

C225 64 Channel 4K PoE Security Camera System for Business Cameras:64 Is the hard drive alreadyImportant Note: This 4K 8MP NVR is only compatible with ZOSI cameras and should not be used with third party brand cameras. Connect PoE Camera via PoE Switch Best For: Clean, centralized wiring with fewer power adapters. Reliable, long term setups in commercial or industrial environments. Applicable to multiple scenarios Applicable to Office Buildings; Shopping Malls; Factories; Warehouses; Parking Lots; Residential Complex; Construction Sites; Retail