Wall Power Adapter: 5VDC, 3A, 5.5×2.1mm Barrel Jack, Center-Positive Shipping:2-4 Weeks Toxic chemical odors are even

Toxic chemical odors are even common with new furniture

and it is less accurate at especially low settings (indicated by the dashed portion of the curve)

the PoE feature failed on these PoE switches:

use a wide range of connections and secure your data and your operating system

Wall Power Adapter: 5VDC, 3A, 5.5×2.1mm Barrel Jack, Center-Positive Shipping:2-4 Weeks Toxic chemical odors are evenThis UL listed 15 W , wall wart style switching power adapter supplies up to 3 A at a regulated 5 VDC . The AC adapter works with input voltages of 100 240 VAC and has a 1. 5 m (5 ft) DC power cord that is terminated by a center positive, 5. 5 2. 1 mm barrel connector. Details for item #1461 This UL certified (file number EPBU. E477038 ) AC to DC converter gives you an easy way to power your DC electronics project from a US style AC electrical socket.