IDE meant Integrated Drive Electronic. The term Integrated Drive Electronics (IDE) refers not just to the connector and interface definition, but also to the fact that the drive controller is integrated into the drive, as opposed to a separate controller on or connected to the motherboard. While the IDE interface is also known by other names such as ATA/ATAPI, EIDE, ATA-2, Fast ATA, ATA-3, Ultra ATA, Ultra DMA and many more, the proper name for the IDE interface is AT Attachment or ATA. With the market introduction of serial ATA in 2003, the original ATA was retroactively renamed Parallel ATA (PATA).
| Pin 1 Reset | Pin 9 Data 4 | Pin 17 Data 0 | Pin 25 I/O read | Pin 33 Addr 1 |
| Pin 2 Ground | Pin 10 Data 11 | Pin 18 Data 15 | Pin 26 Ground | Pin 34 GPIO_DMA66_Detect |
| Pin 3 Data7 | Pin 11 Data 3 | Pin 19 Ground | Pin 27 IOCHRDY | Pin 35 Addr 0 |
| Pin 4 Data 8 | Pin 12 Data 12 | Pin 20 Key or VCC_in | Pin 28 Cable select | Pin 36 Addr 2 |
| Pin 5 Data 6 | Pin 13 Data 2 | Pin 21 DDRQ | Pin 29 DDACK | Pin 37 Chip select 1P |
| Pin 6 Data 9 | Pin 14 Data 13 | Pin 22 Ground | Pin 30 Ground | Pin 38 Chip select |
| Pin 7 Data 5 | Pin 15 Data 1 | Pin 23 I/O write | Pin 31 IRQ | 3P Pin 39 Activity |
| Pin 8 Data 10 | Pin 16 Data 14 | Pin 24 Ground | Pin 32 No connect | Pin 40 Ground |