The 48vdc output on the cb-pwrinj-na, is that a general output for all aps or are there multiple models?

The single-port Cisco CB-PWRINJ-NA provides 802.3af power and data signal, sending both to the Cisco Access Point. The power injector provides up to 15.4 W over the unused wire pairs of a Category 5 or better Ethernet cable, supplying enough power for a distance of 328 ft. (100 m) on the Cisco Access Point. It is a general output for all APs.

Am i missing something or should this be powering my cbw140ac-b? my wap turns on, green for 3-4 minutes then off.

You don’t need this particular unit. So long as your PoE source supports 802.3af, and the source is not over the limit. I use a switch to power my 240Aac wap’s.

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Cisco Business Power Over Ethernet Injector | Limited Lifetime Protection (CB-PWRINJ-NA)

Cisco Business Power Over Ethernet Injector | Limited Lifetime Protection (CB-PWRINJ-NA)

Product ID: 287282920

Details

Brand
Cisco
Compatible devices
Desktop
Data link protocol
Ethernet
Data transfer rate
1 Gigabits Per
Hardware interface
Ethernet

⚡15W guaranteed power output

🌐Gigabit LAN port for high-speed connectivity

🔌Plug-and-play setup, zero hassle

Description

⚡ Power your network like a pro—no extra cables, no compromises!

EFFORTLESS SETUP - Plug in and power up instantly—no configuration needed
TRUSTED RELIABILITY - Backed by limited lifetime protection and expert support
GIGABIT SPEED ASSURANCE - High-speed LAN port ensures no bottlenecks in your network
CLUTTER FREE POWER DELIVERY - Eliminate extra power cables with PoE technology
SEAMLESS CISCO COMPATIBILITY - Optimized for Cisco Business Wireless 100 & 200 Series access points

The Cisco Business Power Over Ethernet Injector (CB-PWRINJ-NA) delivers a reliable 15W power output through a high-speed Gigabit LAN port, designed specifically for Cisco Business Wireless 100 and 200 Series access points. This compact, plug-and-play device reduces cable clutter by combining power and data delivery over a single Ethernet cable. It comes with limited lifetime protection, one-year technical support, and a 90-day hardware warranty, making it a trusted choice for professional-grade network setups.

Specifications

ASIN	B087QTMJCN
Best Sellers Rank	#107,507 in Computers ( See Top 100 in Computers ) #396 in Wireless Access Points
Brand	Cisco
Built-In Media	CB-PWRINJ Power Injector, Power card, Support contact pointer card
Compatible Devices	Desktop
Compatible devices	Desktop
Customer Reviews	4.6 out of 5 stars 39 Reviews
Data Link Protocol	Ethernet
Data Transfer Rate	1 Gigabits Per Second
Data link protocol	Ethernet
Data transfer rate	1 Gigabits Per Second
Hardware Interface	Ethernet
Hardware interface	Ethernet
Item Type Name	Power Injector
Item Weight	0.4 Kilograms
Item weight	0.4 Kilograms
Manufacturer	CISCO SYSTEMS - ENTERPRISE
Mfr Part Number	CB-PWRINJ-NA
Model Number	CB-PWRINJ
UPC	889728286817

Reviews

J**Y

Great Deal

13.10.2025

R**2

Works as expected not issues with random shut downs.

29.07.2021

D**K

A very helpful device

26.06.2021

L**U

Works great.

22.08.2021

G**K

24.06.2021

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