Reference For The Universal Serial Bus (Usb) Connectors; Usb Port Connector Diagram; Usb Connector Pin Assignments - Sun Microsystems SUN FIRE 280R Owner's Manual

Reference for the Universal Serial Bus
(USB) Connectors
Four Universal Serial Bus (USB) connectors (J3001, J3002) are located on the main
logic board back panel. The port pin assignments are identical.

USB Port Connector Diagram

USB Connector Pin Assignments

Pin Signal Name
A1 USB0_VCC
A2 CM_USB_D0_N
A3 CM_USB_D0_P
A4 Gnd
B1 USB1_VCC
B2 CM_USB_D1_N
B3 CM_USB_D1_P
B4 Gnd
J3001
1 2 3 4
1 2 3 4
Description Pin
5 Volts C1
Signal negative C2
Signal positive C3
Ground C4
5 Volts D1
Signal negative D2
Signal positive D3
Ground D4
Appendix A
A C
1
B D
1
Signal Name Description
USB2_VCC 5 Volts
CM_USB_D0_N Signal negative
CM_USB_D0_P Signal positive
Gnd Ground
USB3_VCC 5 Volts
CM_USB_D1_N Signal negative
CM_USB_D1_P Signal positive
Gnd Ground
Connector Signal Descriptions
J3002
2 3 4
2 3 4
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