Table 20. System-board connectors (continued)
Callout Callout
7  Lift Handle
8  MGMT NIC connector
9  Internal USB Connector 10  Second MGMT Ethernet Connector
11  7mm/Rear BP Sideband Connector 12  OCP 3.0 Network Card Connector
13  Riser 1 Slot 14  Leak Detection Connector
15  Front USB Connector 16  CMOS Battery(CR2032)
17  PCIe Connector 8 / SATA Connector 1 18  External LCD Connector
19  Front VGA Connector 20  Front I/O connector for Y cable
21  Front Panel Connector 22  PCIe Connector 9 / SATA Connector 2
23  M.2 Power Connector 24  PCIe Connector 7 / SATA Connector 0
25  PCIe Connector 6 26  PCIe Connector 5
27  PCIe Connector 4 28  PCIe Connector 3
29  PCIe Connector 2 30  PCIe Connector 1
31  Fan Board Sideband Connector 32  Fan Board Power Connector 
33  Internal RAID Power Connector 34  Pump Connector
35  Power Supply 1 Connector 36  BP Power Connector 
note 1
37  Power Supply 2 Connector 38  GPU/7mm/Rear BP Power Connector
note 2
39  Riser 2 Slot 40  RoT Connector
41  Intrusion Switch Connector (Reserved) 42  M.2/7mm BP Signal Connector
43  Fan Board Power Connector 44  Fan Board Sideband Connector
45  Fan 1-7 Connectors
46  Lift Handle
47  Intrusion Switch Connector
Notes: 
1.  The silkscreen of this connector on the system board assembly may be either BP Pwr or BP1 Pwr.
2.  The silkscreen of this connector on the system board assembly may be either 7MM/RBP/GPU Pwr or 
7M/RBP/GPU Pwr.
System-board-assembly switches
This section provides information about locations and functions of the switch block on the system board 
assembly that contains the system I/O board and processor board.
Important:
1.  Before you change any switch settings or move any jumpers, turn off the server; then, disconnect all 
power cords and external cables. Review the following information:
• 
https://pubs.lenovo.com/safety_documentation/
•  “Installation Guidelines” on page 45
•  “Handling static-sensitive devices” on page 48
•  “Power off the server” on page 60
34 ThinkSystem SR635 V3 User Guide