Can anyone suggest an expresscard 3/4 to firewire adaptor for 2011 macbook pro?

Hi,

Can anyone suggest a specific brand and model of expresscard 3/4 to firewire adaptor for a May 2011 Macbook Pro? I've been searching but am not sure of the exact spec of what I need, can anyone recommend one?

thanks!

QA Rechargeable Battery MacBook Pro

QA Rechargeable Battery MacBook Pro

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