52 MB Smartdrive (250-4124) Jumper Settings Faxback Doc. # 3096 The SmartDrive has 3 pairs of jumper pins near the 40 pin connector at the rear of the drive. ┌────────┬───────────────┬────────────────────────────────────────────┐ │ Jumper │ Setting │ Function │ ├────────┼───────────────┼────────────────────────────────────────────┤ │ DS │ jumpered* │ Indicates this drive is the master drive │ │ DS │ not Jumpered │ Indicates this drive is a slave drive. │ ├────────┼───────────────┼────────────────────────────────────────────┤ │ DM │ Installed │ Indicates that a ProDrive P40At or P80AT │ │ │ │ is installed on the bus. │ │ DM │ not Jumpered* │ Indicates that no proDrive P40At or P80AT │ │ │ │ is installed on the bus. │ ├────────┼───────────────┼────────────────────────────────────────────┤ │ SP │ Jumpered │ Enables self-seek mode. │ │ SP │ not Jumpered* │ Disables self-seek mode. │ └────────┴───────────────┴────────────────────────────────────────────┘ NOTE: * represents default settings. ┌──────────────────────────────────────────────┐ │Jumper Configuration for Single Drive System: │ └──────────────────────────────────────────────┘ DS Jumpered DM Not Jumpered SP Not Jumpered ┌─────────────────────────────────────────────────────────────────────────┐ │Daisy Chain (two drive), Jumper Configuration for Primary (master) Drive:│ └─────────────────────────────────────────────────────────────────────────┘ DS Jumpered DM Not Jumpered SP Jumpered * Note: The owner's manual may state that SP and DS should not be jumpered at the same time. The manual is incorrect. ┌──────────────────────────────────────────────────────────────────────────┐ │Daisy Chain (two drive), Jumper Configuration for Secondary (slave) Drive:│ └──────────────────────────────────────────────────────────────────────────┘ DS Not jumpered DM Not jumpered SP Not jumpered (css 07/29/93)