Technical Reference Guide www.hp.com 5-3
Input/Output Interfaces
5.3 PATA Interface
The USDT system board includes a SATA-to-PATA bridge and slim IDE connector that supports
an IDE-type optical disk drive. The pinout for this connector is listed in Table 5-2
The 44-pin slim IDE connector is shown in the figure below.
Figure 5-2. 44-pin Slim IDE Connector (P21on system board).
Table 5-2.
44-Pin Slim IDE Connector Pinout
Pin Signal Pin Signal Pin Signal Pin Signal
1 RESET# 2 GND 23 DIOW# 24 GND
3 DD7 4 DD8 25 DIOR# 26 GND
5 DD6 6 DD9 27 IORDY 28 CSEL
7 DD5 8 DD10 29 DMACK# 30 GND
9DD4 10DD1131INTRQ 32NC
11 DD3 12 DD12 33 DA1 34 PDIAG#
13 D D 2 14 D D 13 35 D A 0 3 6 D A 2
15 D D 1 16 D D 14 37 C S 0 # 3 8 CS 1 #
17 DD0 18 DD15 39 IDEACT# 40 GND
19 G N D 20 Key ( n o pi n ) 41 5 V 42 5V
21 D MA RQ 22 G ND 43 GND 44 Res er ve d
2
44
43
1
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