Hikvision DS-7732NI-M4/16P 32CH M Series 8K NVR with 16 PoE Ports
The Hikvision DS-7732NI-M4/16P is a professional-grade 32-channel M Series 8K network video recorder built for larger CCTV installations requiring high bandwidth, strong storage capacity and flexible camera connectivity.
It supports up to 32 IP camera inputs, with camera resolutions up to 32MP. The NVR provides 320Mbps incoming bandwidth and 400Mbps outgoing bandwidth, making it suitable for demanding multi-camera systems using high-resolution Hikvision IP cameras. Hikvision’s datasheet lists support for H.265+, H.265, H.264+ and H.264 video formats, helping reduce storage and bandwidth requirements.
This model includes 16 independent PoE network interfaces, allowing up to 16 PoE cameras to be connected directly to the recorder. Additional cameras can be added via the network using external PoE switches, making it a practical choice for systems that may grow beyond 16 cameras. The PoE interfaces support IEEE 802.3 af/at with a total PoE power budget of up to 200W.
Key Features
32-Channel IP Camera Recording
The DS-7732NI-M4/16P supports up to 32 IP camera channels, making it suitable for large homes, warehouses, schools, offices, factories, apartment buildings, retail sites and commercial facilities.
Supports Cameras up to 32MP
The NVR supports recording resolutions up to 32MP, giving installers flexibility to use high-resolution Hikvision cameras where detail is critical, such as entrances, car parks, driveways, loading areas and cash handling points. Hikvision notes that when Ultra HD mode is enabled, the recorder supports up to 8 channels of 32MP/24MP IP video input.
16 Built-In PoE Ports
With 16 built-in PoE ports, this recorder can power and connect cameras directly over network cable without needing a separate PoE switch for the first 16 cameras.
For systems above 16 cameras, the remaining channels can be added over the LAN using external PoE switches.
320Mbps Incoming Bandwidth
The high 320Mbps incoming bandwidth gives the system more headroom for multiple high-resolution cameras, higher bitrates and demanding CCTV layouts.
8K HDMI Output
The DS-7732NI-M4/16P supports HDMI output up to 8K resolution on HDMI 1, plus a second HDMI output up to 4K. Hikvision notes that when HDMI 1 is set to 8K, HDMI 2 is limited to a maximum of 1080p.
4 SATA HDD Bays
This recorder includes 4 SATA interfaces, with support for up to 16TB per disk, giving a maximum internal storage capacity of up to 64TB before considering external eSATA expansion.
16-Channel Synchronous Playback
The NVR supports 16-channel synchronous playback, allowing operators to review multiple cameras at the same time during investigations.
Smart Event Support
The recorder supports multiple VCA events and configurable smart camera functions, including motion detection, line crossing, intrusion detection, heat map, ANPR and people counting, depending on the connected camera model and firmware compatibility.
Alarm Inputs and Outputs
The DS-7732NI-M4/16P includes 16 alarm inputs and 9 alarm outputs, making it useful for sites needing integration with external sensors, sirens, strobes, gates or other alarm-triggered devices.
Hik-Connect and ONVIF Support
The recorder supports Hik-Connect, DDNS, web access and ONVIF/RTSP camera access protocols, giving installers flexibility for remote viewing and compatible third-party IP camera integration.
Technical Specifications
| Feature |
Specification |
| Model |
DS-7732NI-M4/16P |
| Series |
Hikvision M Series 8K NVR |
| IP Camera Inputs |
32 channels |
| Max Camera Resolution |
Up to 32MP |
| Incoming Bandwidth |
320Mbps |
| Outgoing Bandwidth |
400Mbps |
| Compression |
H.265+ / H.265 / H.264+ / H.264 |
| HDMI 1 Output |
Up to 8K, 7680 × 4320 / 30Hz |
| HDMI 2 Output |
Up to 4K, 3840 × 2160 / 60Hz |
| VGA Output |
1920 × 1080 / 60Hz |
| CVBS Output |
1-channel BNC |
| Audio Output |
1-channel RCA |
| Two-Way Audio |
1-channel RCA |
| Synchronous Playback |
16-channel |
| PoE Ports |
16 × RJ45 10/100Mbps |
| PoE Budget |
Up to 200W |
| PoE Standard |
IEEE 802.3 af/at |
| Network Interface |
1 × RJ45 10/100/1000Mbps LAN |
| HDD Bays |
4 × SATA |
| Max Internal HDD Capacity |
Up to 16TB per HDD |
| eSATA |
1 × eSATA interface |
| Alarm Inputs / Outputs |
16 inputs / 9 outputs |
| USB Ports |
2 × USB 2.0 front, 1 × USB 3.0 rear |
| RS-485 / RS-232 |
2 × RS-485, 1 × RS-232 |
| Power Supply |
100–240VAC, 50–60Hz |
| Operating Temperature |
-10°C to 55°C |
| Chassis |
19-inch rack-mounted 1.5U |
| Dimensions |
440 × 389 × 72mm |
| Weight |
≤ 5kg without HDD |
Suitable Use Cases
Large Residential CCTV Systems
Ideal for large homes, acreage properties and high-end residential sites needing more than 16 cameras, long retention times and a professional NVR platform.
Warehouses and Industrial Sites
Suitable for warehouses, factories, workshops and logistics sites where multiple entrances, loading docks, internal aisles, car parks and perimeter areas need to be covered.
Schools and Childcare Centres
A good fit for education environments needing centralised recording across classrooms, entrances, playgrounds, halls, staff areas and external perimeters.
Retail and Shopping Sites
Useful for retail stores, shopping strips, supermarkets and bulky goods sites that need reliable recording across point-of-sale areas, entrances, stockrooms and car parks.
Apartment Buildings and Body Corporate Sites
Suitable for lobbies, lifts, car parks, bin rooms, mail areas, access points and common areas, especially where a mix of direct PoE and network-connected cameras is required.
Commercial Offices
Ideal for offices needing CCTV coverage across reception, entries, corridors, server rooms, warehouses and staff parking areas.
Installer Notes
16 PoE Ports Does Not Mean Only 16 Cameras
This NVR supports 32 camera channels, but only 16 cameras can be connected directly to the built-in PoE ports. Cameras 17–32 will need to be connected through the network, usually via one or more external PoE switches.
Watch the PoE Budget
The total PoE budget is up to 200W. Before installation, calculate the combined wattage of all PoE cameras connected directly to the NVR. PTZ cameras, ColorVu cameras with white light, cameras with heaters, and cameras with higher power draw may require more careful planning.
Use Surveillance-Grade Hard Drives
For 24/7 CCTV recording, use surveillance-grade HDDs such as WD Purple or Seagate SkyHawk. This model supports up to 4 internal HDDs, with up to 16TB per disk.
Plan Storage Based on Bitrate, Not Just Camera Count
Storage retention depends on resolution, bitrate, frame rate, compression, motion level and recording schedule. A 32-camera system with 8MP cameras will need significantly more storage than a 32-camera system using mostly 4MP cameras.
Ideal Backbone for Mixed Camera Systems
This recorder is suitable for mixed Hikvision systems using AcuSense, ColorVu, PTZ, fisheye, ANPR and standard IP cameras, provided camera compatibility and bandwidth are checked during design.
Check Smart Feature Compatibility
Smart events such as line crossing, intrusion detection, ANPR, heat map and people counting depend on the connected camera model and system configuration. Do not assume every smart feature is available on every camera.
Rack Installation
The recorder uses a 19-inch rack-mounted 1.5U chassis, making it suitable for comms racks, CCTV cabinets and commercial equipment rooms.
HDMI Output Note
The NVR supports HDMI 1 up to 8K, but if HDMI 1 is running at 8K, HDMI 2 is limited to a maximum of 1080p. This matters when designing dual-monitor control room setups.
FAQs
How many cameras does the Hikvision DS-7732NI-M4/16P support?
It supports up to 32 IP cameras.
How many PoE ports does it have?
It has 16 built-in PoE ports. These can power and connect up to 16 compatible PoE cameras directly.
Can I connect 32 cameras directly to the back of the NVR?
No. Only 16 cameras can connect directly to the built-in PoE ports. To use all 32 channels, the remaining cameras need to be connected via the network, usually through external PoE switches.
What is the maximum camera resolution?
The NVR supports cameras up to 32MP, although Hikvision notes that Ultra HD mode supports up to 8 channels of 32MP/24MP IP video input.
Does it support 8K output?
Yes. HDMI 1 supports output up to 8K resolution. HDMI 2 supports up to 4K, but when HDMI 1 is set to 8K, HDMI 2 is limited to 1080p.
How many hard drives can it take?
It supports up to 4 SATA hard drives.
What is the maximum storage capacity?
The recorder supports up to 16TB per hard drive, giving up to 64TB internal storage across four drives.
Does it support H.265+?
Yes. It supports H.265+, H.265, H.264+ and H.264 video compression.
Does it support Hik-Connect?
Yes. The NVR supports Hik-Connect and DDNS for easier remote access and network management.
Does it support ONVIF cameras?
Yes. The NVR supports ONVIF and RTSP camera access protocols, but third-party camera features may be limited compared with Hikvision cameras.
Is this suitable for a 32-camera commercial CCTV system?
Yes. It is designed for larger systems, with 32 channels, 320Mbps incoming bandwidth, 16 PoE ports and 4 HDD bays.
Does it support alarm inputs and outputs?
Yes. It has 16 alarm inputs and 9 alarm outputs, useful for external alarm triggers and integration with other site devices.
Is RAID supported?
No. Hikvision’s datasheet lists RAID as N/A for this model.
Is this NVR suitable for AcuSense cameras?
Yes, it can be used with Hikvision AcuSense cameras. Smart feature availability depends on the connected camera model and configuration.
Is this better than a 16-channel NVR?
For larger or expanding sites, yes. A 32-channel NVR gives more room for future cameras, more storage capacity and more bandwidth headroom than most smaller NVRs.
