TYAN THUNDER I7520, D, R, RD Manual page 27

Thunder i7520 / Thunder i7520R
3.1.12 - SMDC Connector (J34)
3.1.13 - Front USB Connector (USB2)
Chapter 3: Board Installation
J34 SMDC Connector
J34 is a 25 x 2 position connector, which is
for connecting an optional Tyan Server
Management Daughter Card (SMDC).
Both Thunder i7520 S5360 and Thunder
i7520R S5360-1U boards support
Tyan M3291 (SMDC)
See Appendix III for details about the Tyan
SMDC
Front USB Header (USB2)
Function
Power
USB2-
USB2+
GND
Key
24
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Pin# Pin# Function
1 2 Power
3 4 USB3-
5 6 USB3+
7 8 GND
9 10 Reserved