HP dc73 Technical Reference Guide: HP Compaq dc7800 Series Business Desktop Co - Page 57
PATA Interface
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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. 2 44 1 43 Figure 5-2. 44-pin Slim IDE Connector (P21on system board). Pin Signal 1 RESET# 3 DD7 5 DD6 7 DD5 9 DD4 11 DD3 13 DD2 15 DD1 17 DD0 19 GND 21 DMARQ Table 5-2. 44-Pin Slim IDE Connector Pinout Pin Signal Pin Signal Pin Signal 2 GND 23 DIOW# 24 GND 4 DD8 25 DIOR# 26 GND 6 DD9 27 IORDY 28 CSEL 8 DD10 29 DMACK# 30 GND 10 DD11 31 INTRQ 32 NC 12 DD12 33 DA1 34 PDIAG# 14 DD13 35 DA0 36 DA2 16 DD14 37 CS0# 38 CS1# 18 DD15 39 IDEACT# 40 GND 20 Key (no pin) 41 5V 42 5V 22 GND 43 GND 44 Reserved Technical Reference Guide www.hp.com 5-3