Note : IDE pin 28 must pull 470 ohms resistor to GND.

Note : 33 ohms damping resistors is recommended to connect near IDE connector. Please refer to Fig. 2-2 below.

Note : We do not recommend connection to the following IDE HDD models of Seagate: ST 31276A, ST 31720A, ST 32531A, ST 33240A or ST 34340A

Figure 4-2: Damping resistor

Chapter 4 CPC-2245N Main Borad

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Advantech HMI-640S user manual Damping resistor