I have a presonus firebox which comes with a 6 to 6 pin firewire cable. However, my laptop only uses a 4 pin firewire. So I've been looking around for a 4 to 6 pin firewire. Does the quality of the firewire adapter matter? Will this do? : http://www.newegg.com/Product/Product.aspx?Item=N82E16812189107 And do shorter cables mean faster transfer?