which Expresscard USB port for R500 thinkpad

[PRAGUEGUY]

As shown in my other thread, My R500 had a fault and does not have USB ports anymore. I want to buy an expresscard version.
They range quite a lot in price

a cheaper one:

http://www.lan-shop.cz/axago-ecu-230-ecu-230-126811


This one pretends to be sort of "high end", costs two times more , claims to have a NEC chip, . - is that really important?

it is not a great price diffeerence, but I spend loads on IT junk so I dont want to pay twice the amount for nothing.
http://www.lan-shop.cz/kouwell-ub-113-92579

Is there any significant difference, for a user, in speed, reliability, anything else? thanks.


Would you advise a slim one which does not protrude out from the side, with just one port, or a two port one?
I usually need one, but it is not really enough. I may be sticking in a flash disk and at the same time using an USB keyboard.
thanks for any advice.