Design the camera network before buying the cameras
A reliable PoE system is a chain: camera power, cable, switch capacity, uplink bandwidth, recorder throughput and storage. These guides treat the chain as one design problem instead of isolated product specifications.
PoE Switch Power Budget Calculator
Check camera watts, powered ports, planning headroom and uplink bandwidth in one tool.
PoE switch for 8 cameras
Size ports, total watts and gigabit uplink capacity for an eight-camera system.
PoE switch for 16 cameras
Plan higher camera counts, PTZ load, uplinks and spare capacity.
When to Replace a PoE Switch
Audit ports, total watts, per-port PoE class, uplink load and link reliability before upgrading.
Wi-Fi to PoE Migration
Move evidence-critical cameras to wired Ethernet in stages without replacing the entire system.
How PoE power budget works
Understand per-port standards versus the switch total-watt limit.
How many cameras on gigabit?
Calculate camera capacity from aggregate bitrate rather than resolution labels.
Cat5e vs Cat6 for cameras
Choose cable by bandwidth margin, PoE delivery, interference and future reuse.
How far can PoE cameras run?
Understand the normal 100 m Ethernet design limit and longer-run options.
PoE injector vs switch
Choose the cleaner power architecture for one camera versus a multi-camera system.
Security camera VLAN guide
Segment cameras from trusted devices without breaking the NVR recording path.
Weatherproofing Outdoor PoE Ethernet
Protect outdoor RJ45 connectors, seals and cable routing from water intrusion.
Intermittent PoE Camera Connection
Isolate unstable links with cable, port, camera and PoE-budget swap tests.
PoE Camera Packet Loss
Trace dropped frames through access links, switch uplinks, VLANs and recorder load.
4TB NVR retention
Worked retention estimates by camera count and aggregate bitrate.
8TB NVR retention
See when a larger surveillance drive meaningfully extends recording history.