Technical Product Specification

Connector/Header Locations and Pin-outs Intel® Server Board S5520UR and S5520URT TPS
Intel order number E44031-012 Revision 1.9
104
Table 57. External RJ-45 Serial A Port Pin-out (J9A2)
Pin
Signal Name
Description
1
SPB_RTS
RTS (request to send)
2
SPB_DTR
DTR (Data terminal ready)
3
SPB_OUT_N
TXD (Transmit data)
4
GND
Ground
5
SPB_RI
RI (Ring Indicate)
6
SPB_SIN_N
RXD (receive data)
7
SPB_DSR _DCD
Data Set Ready/Data Carrier Detect
8
SPB_CTS
CTS (clear to send)
Table 58. Internal 9-pin Serial B Header Pin-out (J1A1)
Pin
Signal Name
Description
1 SPB_DCD DCD (carrier detect)
2
SPB_DSR
DSR (data set ready)
3
SPB_SIN_L
RXD (receive data)
4
SPB_RTS
RTS (request to send)
5
SPB_SOUT_N
TXD (Transmit data)
6
SPB_CTS
CTS (clear to send)
7
SPB_DTR
DTR (Data terminal ready)
8
SPB_RI
RI (Ring indicate)
9
SPB_EN_N
Enable
6.6.6 USB Connector
The following table details the pin-out of the external USB connectors (J7A1 and J7A2) found
on the back edge of the server board.
Table 59. External USB Connector Pin-out (J7A1, J7A2)
Pin
Signal Name
Description
1
USB_OC
USB_PWR
2
USB_PN
DATAL0 (Differential data line paired with DATAH0)
3
USB_PP
DATAH0 (Differential data line paired with DATAL0)
4
GND
Ground
One 2x5 connector on the server board (J1J2) provides an option to support additional two USB
ports. The pin-out of the connector is detailed in the following table: