AFAIK the IO shield is stamped into the back of the chassis, and a 755 board will have a different layout and thus won't fit.
You're better off to sell the GX620 and buy a 755 instead.
AFAIK the IO shield is stamped into the back of the chassis, and a 755 board will have a different layout and thus won't fit.
You're better off to sell the GX620 and buy a 755 instead.