ICX7150 switches can't deliver PoE but one ICX7550 switch can

[IsaacGerman]

I have several devices that are not able to get PoE from switches with model ICX7150-48ZP. However, when I connect these same devices to an ICX7550-24P They are able to draw power and work normally.
These devices are B578 Edge Routers PN 201-104-P00-SB0, they are listed to be class 2 PoE devices, and I already tried limiting the power delivery on the port by both class and Watts to no avail.
Other devices such as APs are having no issues getting PoE.
Used power on all switches is well below the allocated.
The 7150 Ruckus switches are currently running version SPS08095k and the 7550 is running version GZS08095g.
I'm running out of ideas, any advice would be helpful

[BenBeck]

My assumption would be no unless you can somehow force the end device to pull more power. What does it pull while on the 7550? If you strongly believe the device *is* behaving within the 802.3 spec, then I would advise to open a case and it can be formally investigated. 

[IsaacGerman]

All I know about those devices according to their manual is that the B578 is an IEEE 802.3af compliant Powered Device (PD) interface with a current modeswitching regulator. The B578 is an IEEE class 2 device. If the B578 exceeds its IEEE 802.3af class-2 power rating (i.e., draws more than 7W), the PoE switch in the network will shut down the power and Ethernet connectivity to the B578.
hbt-bms-ETB103-B578-Overview.pdf
Don't know why the ICX7150 model specifically is getting that error. 

I will check how much watts are being drawn from the 7550 and inform back. I tried opening a formal case but support stated that the device doesn't have a support license.

[BenBeck]

It's a tough spot to be in. We do occasionally see devices that are supposed to be compliant act up. The problem is we would need a replication in house to actually dig in to it. Without that, we can really only go off what the CLI is telling us. 

[BenBeck]

One additional question. Does it act differently on the multigig vs. 1Gb (port 1 vs 48) for the 7150ZP?

[IsaacGerman]

Will check and report back