a SH2 is fine for 200 - no real reason to go to a 3 especially if they want money for it
so
how are you testing - test wired and if you are testing wired check the spec of the lan cable - needs to be cat5e or better - then theck the lan card spec that its gigabit not 10/100
if all that is good then try a reboot of the hub
if you are still getting 100 and you think all is good your side post the configuration data from the hub
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Tony