Dell 3 - Manual (Page 141)

PERC 3/QC Hardware Installation 139
J14 Serial Port
J14 attaches to a serial cable. Figure 10-2 and Table 10-4 show the pinout for
J14.
F i g u r e 1 0 - 2 . J 1 4 S e r i a l P o r t D i a g r a m
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. Table 10-5 displays the pinout for J17.
J19 Onboard BIOS Enable
J19 is a 2-pin connector which enables or disables PERC 3/QC onboard
BIOS. The onboard BIOS should be enabled (J19 unjumpered) for normal
board position. Unjumpered is the default. Table 10-6 displays the J19
settings.
Ta b l e 1 0 - 4 . J 1 4 S e r i a l Po r t P i n o u t
Pin Description Pin Description
1 Carrier detect 2 Data set ready
3 Receive data 4 Request to send
5 Transmit data 6 Clear to send
7 Data terminal ready 8 Ring indicator
9 Ground 10 CUT
Ta b l e 1 0 - 5 . J 1 7 D i r t y C a c h e L E D P i n o u t
Pin Description
1 Signal pulled high
2 Dirty cache signal
2 4 6 8
1 3 5 7 9