Am I Ordering the Correct Hard Drive or Tray?
Did you know that 5% of our customers order the wrong drive
because of an incorrect connection type?
You can save yourself critical time and expenses (15% in
restocking fees) by checking your connection type before making a hard disk
If in doubt, please call the manufacturer of your server to
What is the difference between 68-pin and 80-pin SCSI
drives and how do I know which one to purchase?
Current SCSI hard disk drives typically come in either
68-pin or 80-pin varieties.
NSCA (non-SCA) drives use a 68-pin connector for data and a
separate 4-pin Molex style power connector.
68 pins on the SCA connector are used for data and the other
12 pins are used to provide power to the hard drive.
SCA (Single Connector Attachment) hard drives use a single
TOP - SCSI hard drive showing 80-pin SCA
BOTTOM- SCSI hard drive with 68-pin connector
and separate power and configuration jumpers
NOTE: There is also the Serial Attached SCSI (SAS)
SFF-8482 connection type: