Intel SE7520JR2 7.5.7Serial Port Connectors, C78844-002, Connectors and Jumper Blocks, Intel® Server Board SE7520JR2, Table 100: External RJ-45Serial B Port Pin-out

Connectors and Jumper Blocks				Intel® Server Board SE7520JR2
Table 99: Legacy 34-pin Floppy Drive Connector Pin-out (J3K2)
	Pin	Signal Name	Pin	Signal Name
	1	GND	2	FD_DENSEL0
	3	GND	4	Test Point
	5	KEY	6	FD_DENSEL1
	7	GND	8	FD_INDEX_L
	9	GND	10	FD_MTR0_L
	11	GND	12	FD_DS1_L
	13	GND	14	FD_DS0_L
	15	GND	16	FD_MTR1_L
	17	Test Point	18	FD_DIR_L
	19	GND	20	FD_STEP_L
	21	GND	22	FD_WDATA_L
	23	GND	24	FD_WGATE_L
	25	GND	26	FD_TRK0_L
	27	Test Point	28	VCC
	29	GND	30	FD_RDATA_L
	31	GND	32	FD_HDSEL_L
	33	GND	34	FD_DSKCHG_L

7.5.7Serial Port Connectors

The Server Board SE7520JR2 provides one external RJ45 Serial B port and one internal 9-pin Serial A header. The following tables define the pinouts for each.

Table 100: External RJ-45 Serial B Port Pin-out

Pin	Signal Name	Description
1	RTS	Request To Send
2	DTR	Data Terminal Ready
3	TXD	Transmit Data
4	GND	Ground
5	RI	Ring Indicate
6	RXD	Receive Data
7	DSR / DCD	Data Set Ready / Data Carrier Detect1
8	CTS	Clear To Send
Note:

1.A jumper block on the server board will determine whether DSR or DCD is routed to pin 7. The board will have the jumper block configured with DSR enabled at production.

Table 101: Internal 9-pin Serial A Header Pin-out (J1A3)

Pin Signal Name

1DCD (carrier detect)

2DSR (data set ready)

196	Revision 1.0
	C78844-002