... - i.e. if you're using a 32 bit drive, you can't use 16 bit terminators as it would leave the upper (or lower) 16 bits unterminated. Or something 
*LOL* - make that 16 bit and 8 bit and you're spot on. Most drives work with the narrow SCSI bits (8 bit) terminated only though, but some do require full (=wide) termination.
