Altronix NETWAY161G 16-Port PoE+ Midspan 480W Injector
The Altronix NETWAY161G is a 16-port PoE+ midspan injector designed for retrofit security and networking deployments where budget or operational constraints prohibit switch replacement. It injects IEEE 802.3at+ power into standard non-PoE Ethernet cabling and switches, delivering 480W aggregate capacity across 16 ports. The midspan architecture is the differentiator — it lets you power IP cameras, access points, and other PoE+ endpoints without touching existing network infrastructure, making it the path of least resistance for expanding powered-device count on mature installations.
Key Features
- 16 PoE+ Ports, 480W Total: IEEE 802.3at+ compliance allows up to 30W per port with power management. On a 16-camera deployment with mixed load (15W average per camera), you consume approximately 240W, leaving headroom for access points or thermal heater modules.
- Midspan Injector Architecture: Injects power onto existing Cat5e/Cat6 runs without replacing switches or recabling. Sits between your non-PoE switch and powered devices.
- Dedicated Power Input: Requires external 480W AC power supply (included). Isolates network switching infrastructure from power delivery, reducing thermal load on switch backplanes.
- Rack-Mount Form Factor: 1U or equivalent rack integration — standard 19-inch equipment cabinet footprint, no shelf space or underdesk clutter.
- Per-Port Power Management: Each port independently negotiates power class with connected device, preventing cascade failures if one endpoint draws peak current.
- Lifetime Limited Warranty: Factory-backed coverage reflects Altronix build quality and expected 10+ year operational lifespan in stable cabinet environments.
Retrofit deployments are the NETWAY161G's native habitat. You inherit a 10-year-old network backbone (non-PoE switches, Cat5e cabling, no power conditioning) and need to add 12 new IP cameras to parking-lot and entry-point coverage. Rip-and-replace is economically prohibitive. Instead, you parallel-connect the NETWAY161G downstream of the existing switch, run camera feeds through its ports, and power them without touching the production network. Total incremental cost: one midspan, one AC outlet, and termination labor — no switch vendor approval, no firmware upgrade risk, no 48-hour cutover window.
Power budgeting is critical. The 480W limit is fixed. A 16-camera build-out with 25W per camera (H.265 codec, heater module active in winter) consumes 400W, leaving only 80W for access points or future expansion. Audit your endpoint power specs before ordering; if you're consistently maxing the budget, a PoE+-capable switch replacement becomes the smarter long-term capex. The NETWAY161G shines at 60–70% utilization across a 3-to-5-year planning horizon.
Integration is straightforward. The midspan sits passively between your non-PoE switch (any brand, any age) and PoE+ devices. ONVIF-compliant IP cameras and access points auto-negotiate power class on plug-in. No configuration, no driver install, no VMS coordination required — power flows on Ethernet pins 4/5 and 7/8 per spec. If you're mixing old analog PTZs with PoE+ IP domes on the same switch, the midspan powers only the PoE+ endpoints; analog feeds bypass it cleanly. Network uptime is unaffected — the midspan has no IP address, no management interface, no firmware to patch.
The NETWAY161G is US-manufactured (country of origin: US) and carries Altronix's lifetime limited warranty, reflecting confidence in passive midspan reliability. Unlike active switching equipment, there are no backplane hotspots, no fan noise, and no thermal throttling — it's a straightforward power-delivery appliance. Cabinet mounting is tool-free; rack ears accommodate both standard and slightly oversized cabinet dimensions, and DC input is screw-terminal (no IEC connector fumbling). For integrators managing 50+ retrofit sites annually, this consistency in form factor and behavior is invaluable.
Eden PhillipsPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
In our experience, the NETWAY161G occupies a unique economic niche: it's the retrofit PoE+ injector that just works. We've deployed it across municipal parking lots, hospitality campuses, and industrial warehouses where network infrastructure predates PoE entirely — think 2008-era Cisco or Juniper core switches, Cat5e in-wall, no budget for a $12K+ switch replacement. The midspan lets you inject 480W of power into that legacy network without touching it. Operationally, that means no change-control board approvals, no production window risk, and no IT department politics. From a deployment perspective, we've found the NETWAY161G most useful in hybrid scenarios: maybe your new video-analytics zone runs on modern PoE+ switches, but your perimeter and parking areas are still on old non-PoE infrastructure. You midspan the legacy zones, native-PoE the new zones, and operate from a single NVR. The 480W budget is real — we've had to scope projects carefully, add load calculations to the site survey, and occasionally recommend a second NETWAY161G or a planned switch upgrade when the client wanted to exceed capacity. It's honest gear, not undersized.
Technical Highlights:
- IEEE 802.3at+ Compliance: Full PoE+ standard — 30W per port (vs. 15W legacy PoE). Supports modern IP cameras with motorized zoom, heater/blower modules, and high-power access points. Per-port negotiation means a 5W access point doesn't hog capacity meant for a 25W camera.
- 480W Aggregate Budget: Sufficient for 16 typical IP cameras (25-30W average) or a mix of 12 cameras and 4 access points. Know your endpoint specs before wiring — a single 45W PTZ or dual-NIC access point consumes 15% of total budget.
- Passive Midspan Architecture: Zero latency, zero jitter, zero management overhead. No IP address, no firmware, no reboot cycles. Power injection is purely analog — network packets pass through untouched. This is why it works on 20-year-old switches.
- External 480W AC Supply: Included. Allows the NETWAY161G itself to remain passive and compact. Locate the AC brick on a separate UPS circuit if uptime is critical; the midspan will continue injecting power even if the switch loses AC.
- Rack-Mount 1U Footprint: Standard 19-inch equipment-cabinet mounting. Thermal dissipation is minimal (passive device) — no forced-air cooling or exhaust venting required. Fits in closed cabinets or open frames equally well.
Deployment Considerations:
- Power budgeting is non-negotiable. Calculate endpoint wattage (spec sheet, field measurements, or conservative 30W per port) and ensure total load ≤ 450W (85% utilization rule). If you're adding endpoints later, account for that headroom upfront. We've seen installers pack a NETWAY161G at 95% and then struggle when a client upgrades a camera to a higher-power model.
- Positioning matters. The midspan must sit between the non-PoE switch and PoE+ endpoints. If the switch is in a remote IDF and endpoints are in a distant cabinet, run all powered-device feeds back through the NETWAY161G — don't try to inject power at the endpoint end of a long run (power drop over 300+ feet of Cat5e is measurable). Keep cable runs under 330 feet per IEEE spec.
- Compatibility is broad but not universal. Passive PoE devices (older IP phones, legacy analog transmitters that passively accept voltage on unused pins) may not work — they lack PoE negotiation. Confirm endpoint support for IEEE 802.3at before deployment. If mixed old/new on the same switch, the midspan only powers 802.3at-aware devices; others pass through unpowered.
- UPS and redundancy planning. The NETWAY161G is a single point of failure for power. If uptime is critical, locate its AC input on a dedicated UPS circuit, or consider dual midspans on separate AC supplies (requires network switch port trunking and careful design). Standard practice for critical perimeter zones.
- Thermal design is passive, so cabinet ventilation is adequate. The midspan runs cool and silent — no fan maintenance or noise complaints. Screw-terminal DC input is field-serviceable if the AC supply fails; most integrators keep a spare supply in stock ($50–$80 replacement cost, 10-minute swap).
The NETWAY161G is the right choice for integrators managing retrofit deployments, campus-wide expansions on legacy infrastructure, or mixed-generation networks where full switch replacement is economically unjustified. It's proven, quiet, and honest about its 480W limit. Pair it with load-aware NVR recording policies and you'll operate efficiently for 10+ years. See the Altronix catalog for complementary cabinet-level power and network infrastructure.
