In order to really gain advantage of this feature, devices must have
a reasonable cache size (No miracle is to be expected for a low-end
hard disk with 128 KB or less).
-Some kown old SCSI devices do not properly support tagged command queuing.
+Some known old SCSI devices do not properly support tagged command queuing.
Generally, firmware revisions that fix this kind of problems are available
at respective vendor web/ftp sites.
All I can say is that I never have had problem with tagged queuing using