Dell PowerEdge R420 Systems Owner's Manual

System Board Connectors

Figure 1. System Board Jumpers and Connectors The figure shows the system board connectors and jumpers.

Item	Connector	Description
1	INT_STORAGE	Storage controller card connector
2	ID_BTN	System identification button
3	CMA_JACK	System identification connector
4	USB 2	USB connector
5	USB 1	USB connector
6	IO_RISER2	Riser 2 connector
7	NIC2	Network connector
8	NIC1	Network connector
9	VGA	Video connector
10	COM	Serial connector
11	IO_RISER1	Riser 1 connector
12	CPU2	Processor socket 2
13	FAN6	Cooling fan connector
14	FAN5	Cooling fan connector
15	B1, B4, B2, B5, B3, B6	Memory module sockets
16	FAN4	Cooling fan connector
17	FAN3	Cooling fan connector
18	PWR_CONN_1	8-pin power connector
19	FAN2	Cooling fan connector
20	A1, A4, A2, A5, A3, A6	Memory module sockets
21	BP_SIG	Backplane signal connector
22	PWR_CONN_2	24-pin power connector
23	CPU1	Processor socket 1
24	PDB_CONN	Power distribution board connector
25	BATTERY	Battery connector
26	CTRL_PNL_MB	Control panel interface connector
27	SATA_A-D	SATA connector A-D
28	SATA_E	SATA connector E
29	SAS_A	SAS connector A
30	FP_USB	Front panel USB connector
31	IDSDM	Internal Dual SD Module connector
32	SAS_B	SAS connector B