Plextor PX-W4012TSi 40/12/40S CD-RW Drive 5.25'' HH SCSI TLA0103Plextor PX W4012TSi 40 12 40S CD RW Drive 5. 25'' HH SCSI Internal Firmware TLA0103 Product Description: This item is a Plextor PX W4012TSi 40 12 40 CD RW Drive 5. 25'' HH SCSI internal. Leading Edge Performance Plextor, one of the leading companies for the development and production of CD ROM drives, CD Recorders, CD ReWriters and CD media is expanding its range with the external version of the PlexWriter 40 12 40S, which writes CD's at 40 speed,