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Step 5 Set Jumpers,
J14 Serial Port J14 attaches to a serial cable. The pinout is:
Pin
J19 Onboard BIOS Enable J19 is a 2-pin berg which enables or disables MegaRAID onboard BIOS. The onboard
BIOS should be enabled (J19 unjumpered) for normal board position.
J17 Dirty Cache LED J17 is a two-pin connector for an LED mounted on the computer enclosure. The LED
indicates when the data in the cache has yet to be written to the storage devices.
J23 External Battery J23 is a 5-pin berg that attaches to the optional battery pack. The J23 pinout is:
Continued
Signal Description
1
Carrier Detect
3
Receive Data
5
Transmit Data
7
Data Terminal Ready
9
Ground
J19 Setting
Unjumpered
Enabled
Jumpered
Disabled
Pin
1
High
2
Dirty Cache Signal
Pin
Signal Description
1
+BATT Terminal (red wire)
2
Thermistor (white wire)
3
-BATT Terminal (black wire)
4
BATDQ (no wire)
5
Ground (no wire)
Pin
Signal Description
2
Data Set Ready
4
Request to Send
6
Clear to Send
8
Ring Indicator
10
CUT
Onboard BIOS Status
Description
Chapter 6 Hardware Installation
Cont'd
55
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