Ricoh MP5125A - Manual (Page 22)

Only one jumper should be installed on the jumper connector. If more than one
jumper is installed, the drive may malfunction or be damaged. ●
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1. Jumper Set Up 2. Removing the Computer Cover
3. Mounting the Drive 4. Connecting the Power Connector
5. PC Connections 6. Sound Card Connection
7. Replacing the Computer Cover 8. Device Drivers