This is the perfect size and it was exactly what I needed.  It was also 1/5 the price of what the nearby shack chain wanted!  With free shipping, how could I pass it up?  BTW - I did not know that the missing pin 9 is normal for almost all null modem adapters.  A nice reply from the seller and some follow-up research confirmed it, so don't let it scare you when you see it!