Motherboard Signal From Pdb; Gpgpu Power Connectors; Figure 72. Pdb; Table 39. Power Control Signals Pin-Out (J5) - Intel R2000LT2 Technical Product Specification

Additonal System Boards
10.5.4

Motherboard Signal from PDB

Power control signals are routed via connector J5. The connector provides signal and 12Vstby
interface from the PDB to the motherboard. The 3.3Vstby and 3.3V pins are provided to allow
3.3V power to the fan monitoring circuit the PDB. The SMBus interface from the fan monitoring
circuit is routed from the PDB to the motherboard through this connector.
Pin #
1
2
3
4
5
6
7
8
10.5.5

GPGPU Power Connectors

PDB auxiliary power connectors, J9 (Left) and J10 (Right), labeled for GFX add-in card, provide
auxiliary power to GPGPU devices.
Pin #
1
2
86

Table 39. Power Control Signals Pin-out (J5)

Signal Description
P3V3_STBY
P3V3
PMBUS_SCL
PMBUS_SDA
PSON#
PWOK
SMBAlert#
Reserved

Table 40. GPGPU Aux Connector Pin-out (J9 and J10)

Signal Description
GROUND
GROUND
Intel® Server System R2000LH2/T2 Product Family TPS
Pin # Signal Description
9 Return_Sense
10 P12V_Remote_Sense
11 P12V_STBY
12 P12V_STBY
13 P12V_STBY
14 P12V_STBY
15 FAN_SCL
16 FAN_SDA
Pin # Signal Description
13 P12V1/2
14 P12V1/2
Revision 1.0