Lenovo PC 300PL Technical Information Manual 6275, 6285 - Page 72
Alert on LAN Connector, RFID Connector Asset ID, Fan Connector, USB Port Connectors
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Appendix A. Connector Pin Assignments Alert on LAN Connector Figure 38. J12 Alert on LAN Connector Pin Assignments Pin Description 1 SDA, SMBus data 2 SCL, SMBus clock 3 Tamper detect RFID Connector (Asset ID) Figure 39. J5 Asset ID Connector Pin Assignments Pin 1 2 3 4 Description Antenna 1 Blank (Key) Ground Antenna 2 Fan Connector Figure 40. J14 Front Fan Connector Pin Assignments Pin 1 2 3 Description Fan ground Fan +12V Fan −SPI The LM80 System Management chip thermally controls the front fan. If the termperature of the system is lower than the programmed threshold, then the fan will be turned off. The LM80 and the System Management software monitors the fan speed. The LM80 does not control Disk Fan a and B. USB Port Connectors 1 2 3 4 Figure 41. USB Port Connector Pin Assignments Pin Signal 1 VCC 2 -Data 3 +Data 4 Ground 60 Technical Information Manual
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