Using 802.3af POE hub to power 5700SM

Is it OK to use Ethernet hubs to supply power (802.3af) to the subscriber modules instead of using the Motorola power cubes ACPS with the tail?

No! IEEE 802.3af is 48VDC, Canopy uses 24VDC. The voltage regulator in the Canopy units should be able to use an input voltage up to 40VDC, but I’ve never confirmed it; 802.3af, however, specifies 40VDC as the minimum voltage.

Hehehe. It would be safe if you use the packaged 24Volts Power Adaptor to avoid any inconvenience.

Just a piece of advise. 18-20$ for the cost Power Adaptor can save your SM as well as its performance. =)