Sun Microsystems 280R manual Reference for the Universal Serial Bus USB Connectors

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

	J3001
			A	C
1	2	3	4

B D

1 2 3 4

J3002

1 2 3 4

1 2 3 4

USB Connector Pin Assignments

Pin	Signal Name	Description	Pin	Signal Name	Description
A1	USB0_VCC	5 Volts	C1	USB2_VCC	5 Volts
A2	CM_USB_D0_N	Signal negative	C2	CM_USB_D0_N	Signal negative
A3	CM_USB_D0_P	Signal positive	C3	CM_USB_D0_P	Signal positive
A4	Gnd	Ground	C4	Gnd	Ground
B1	USB1_VCC	5 Volts	D1	USB3_VCC	5 Volts
B2	CM_USB_D1_N	Signal negative	D2	CM_USB_D1_N	Signal negative
B3	CM_USB_D1_P	Signal positive	D3	CM_USB_D1_P	Signal positive
B4	Gnd	Ground	D4	Gnd	Ground

Appendix A Connector Signal Descriptions 215