External case for benq1620 FIREWIRE or USB 2.0



I want to buy a external case for my new dvd-r that going to buy(benq 1620 or liteon 1653).So i searched and found a 5,25" case made by chronos but is firewire.
Should i buy it or not?
Is there any dif. between firewire and usb 2.0?
Can i update the drive’s firmware through firewire and misure PI/PO errors?

Thank you very much and sorry for my poor English :confused:


I have only had success with a case that had a Prolific chipset, All my other cases (Ali, Oxford etc) have failed to support it fully (either errors or lack of speed).


the problem is that i don’t know the type of the chipset :confused: