LDW-411S and IDE connection

I have connected my LDW-411S on the secondary IDE, master. Slave is my LTC-48161H. Is better for the drives (especially for the dvd driver) to use a cable IDE 40 or 80 pins?
Some news on the exit of the new firmware?

For optical drives, it shouldn’t hurt to use a 40-wire cable, but an 80-wire cable will work just fine, too.