Technical Product Specification

Intel® Server Board S5520UR and S5520URT TPS Connector/Header Locations and Pin-outs
Revision 1.9 Intel order number E44031-012
103
6.6.4 Intel
®
I/O Expansion Module Connector (J2B1, J3B1)
The server board provides 2x internal 50-pin mezzanine style connector (J2B1, J3B1) to
accommodate proprietary form factor Intel
®
I/O Expansion Modules, which expand the IO
capabilities of the server board without sacrificing an add-in slot from the riser cards. There are
multiple IO modules for use on this server board.
For more detail on the supported IO modules,
refer to the Intel
®
Server Board S5520UR, S5520URT IO Module Hardware Specification. The
following table details the pin-out of the Intel
®
I/O Expansion Module connectors.
Table 56. 50-pin Intel
®
I/O Expansion Module Connector Pin-out (J2B1, J3B1)
Pin
Signal Name
Pin
Signal Name
1
P3V3_AUX
2
P3V3_AUX
3
PE_RST_IO_MODULE_N
4
GND
5 GND 6 PE2_ESB_RXP_C<0>
7
GND
8
PE2_ESB_RXN_C<0>
9
PE2_ESB_TXP_C<0>
10
GND
11
PE2_ESB_TXN_C<0>
12
GND
13
GND
14
PE2_ESB_RXP_C<1>
15
GND
16
PE2_ESB_RXN_C<1>
17
PE2_ESB_TXP_C<1>
18
GND
19
PE2_ESB_TXN_C<1>
20
GND
21
GND
22
PE2_ESB_RXP_C<2>
22
GND
24
PE2_ESB_RXN_C<2>
25 PE2_ESB_TXP_C<2> 26 GND
27
PE2_ESB_TXN_C<2>
28
GND
29
GND
30
PE2_ESB_RXP_C<3>
31 GND 32 PE2_ESB_RXN_C<3>
33
PE2_ESB_TXP_C<3>
34
GND
35
PE2_ESB_TXN_C<3>
36
GND
37 GND 38 CLK_100M_LP_PCIE_SLOT3_P
39
GND
40
CLK_100M_LP_PCIE_SLOT3_N
41
PE_WAKE_N
42
GND
43 P3V3 44 P3V3
45
P3V3
46
P3V3
47
P3V3
48
P3V3
49 P3V3 50 P3V3
6.6.5 Serial Port Connectors
The server board provides one external RJ-45 Serial A port (J9A2) and one internal 9-pin serial
B header (J1A1). The following tables define the pin-outs.