We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular network injector with four Ethernet ports and wall-mount brackets

STARTECH

STARTECH POEINJ4G 4-port Gigabit PoE+ injector 802.3at/af

SKU CH-KJZ5-2W1ZA MPN POEINJ4G

Adds PoE+ power to four Gigabit Ethernet devices at up to 30 W per port over 100 m cable runs

  • Product typePoE Injector
  • Product colorBlack
  • DetailsIndustry Standards: IEEE 802.3af PoE, IEEE 802.3at PoE+ IEEE
  • Key featuresDeliver power and data to four PoE-powered devices (PD) usin
  • Power four PoE devices from one wall-mountable hub
  • Gigabit throughput on all ports up to 100 m
  • Up to 30 W per port for demanding PoE+ gear
  • Adds PoE to existing non-PoE switches instantly
  • Automatic detection supplies the correct power class per device

Four-port Gigabit PoE+ midspan

The StarTech POEINJ4G is a wall-mountable midspan injector that adds IEEE 802.3af and 802.3at Power over Ethernet to an existing non-PoE network. It supplies both data and power to four PoE-powered devices such as wireless access points, IP cameras or VoIP phones over a single cable run up to 100 m.

Installers adding PoE to a current switch

This unit suits network installers who need to power up to four PoE or PoE+ devices without replacing their existing Ethernet switch. It is not intended for buyers who require more than four powered ports, devices that need more than 30 W per port, or installations that demand a managed PoE switch with per-port monitoring and VLAN support.

Up to 30 W per port under 802.3at

Each of the four Gigabit ports can deliver a maximum of 30 W to a connected powered device, with automatic detection that provides the correct power level for both 802.3af and 802.3at equipment. The injector operates at 10, 100 and 1000 Mbps full-duplex speeds over standard copper cabling.

How it compares

Measured against everything we stock in Patch Panels, PoE & LAN Adapters, at today’s prices. Recalculated every night.

Price $123.99
Pricier than about 69% of the 559 comparable items (median $56.99).

Specifications

Product
Brand nameStarTech.com
Model namePOEINJ4G
Product typePoE Injector
Product colorBlack
Size & build
Shipping weight2.04 kg
Package size262 × 213 × 71 mm

Questions about this item

How do I wall-mount the POEINJ4G and which step is often missed?

Use the mounting slots on the metal chassis to secure it to a wall or rack, then connect each PD to a PoE port and the matching data-in port to your switch — the step often missed is linking every data-in port so all four channels carry traffic.

What maintenance or replacement will the POEINJ4G need over time?

The unit has no fan or user-serviceable parts; if a port stops delivering up to 30 W per the 802.3at handshake, replace the whole injector.

What limit appears first when all four ports run at full 30 W continuously?

The 100 m / 328 ft cable-length ceiling for 1000BASE-T is reached before the injector’s own thermal limit, so keep every run within that distance.

More in Patch Panels, PoE & LAN Adapters

Similar items