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Connectors and Jumper Blocks Intel® Server Board SE7520JR2
Revision 1.0
C78844-002
196
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
7.5.7 Serial 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
1 DCD (carrier detect)
2 DSR (data set ready)