TYAN THUNDER I7522 Manual page 21

Thunder i7520 / Thunder i75 20 R
3.1.1 0 – External LED Input Connector (J9)
3.1. 1 1 - SMDC Connector (J34)
Chapter 3: Board Installation
J9 External LED Input Connector
Pin 1: External LED ACTIVE signal
input (active at Logic High)
Pin 2: GND
J9 i s for an external LED input connector.
It can be connected with an internal device
LED indication, such as hard disk drive LED.
This signal is combined or shared with
onboard primary IDE LED, secondary IDE
LED and SATA LED.
With M7902 SCSI module on TARO
SODIMM socket, the M7902 SCSI drive LED
is also combined with above LED signals and
to be connected to the front panel header
HDD LED pins (TYFP Pin 1 and Pin 3).
J34 SMDC Connector
J34 is a 25 x 2 position connector, which is
for connecting an optional Tyan
Management Daughter Card (SMDC).
Thunder i7522 S5362 supports Tyan M329 1
(SMDC)
See Appendix III for details about the Tyan
SMDC
18
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