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50 pin IDC male connector layout
50 pin IDC male connector
This connector is mostly used for 2.5 IDE HDD of laptops and some other device. Equal to ATA (44) connector, except 50 pin connector used.

Although there are 50 pins in the plug, the mating receptacle need contain only 44 pins (the removal of pins 5 and 6 provides room for the wall of the receptacle). The first four pins of the connector plug located on the device are not to be connected to the host, as they are reserved for manufacturers use. Pins 5, 6 are keys, and are removed.

Pin Name Dir Description
1     Vendor specific
2     Vendor specific
3     Vendor specific
4     Vendor specific
5     keypin
6     keypin

Note: Direction is Controller relative Devices (harddisks).

50 pin IDC female connector layout
50 pin IDC female connector
According to 4 reports in our database (1 positive and 1 negative) the ATA (50) internal pinout may be incorrect.

Is this pinout
Source(s) of this and additional information: Sci.Electronics FAQ: Repair: Pinouts FAQ
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