There was that thread a few months ago discussing how to convert the Quanta LB6M to a TurboIron; it seems you can get a real Brocade TurboIron 24X for $300-$350 now:
Brocade TurboIron 24X TI-24X-AC Managed Switch 729198002121 | eBay
Brocade TurboIron 24X TI-24X-AC Managed Switch with 1x AC POwer 729198002121 | eBay
Brocade TurboIron 24X TI-24X-AC 24 Port Gigabit Ethernet Switch Dual Power 729198002121 | eBay
Since the LB6M is about the same price (or little more), this seems to make sense.
Brocade TurboIron 24X TI-24X-AC Managed Switch 729198002121 | eBay
Brocade TurboIron 24X TI-24X-AC Managed Switch with 1x AC POwer 729198002121 | eBay
Brocade TurboIron 24X TI-24X-AC 24 Port Gigabit Ethernet Switch Dual Power 729198002121 | eBay
Since the LB6M is about the same price (or little more), this seems to make sense.