PATA代表并行高级技术附件，它是一种总线接口，用于连接硬盘、光驱等二级存储设备。它由西部数据和康柏于 1986 年首次推出。后来被SATA取代。
SATA代表Serial Advanced Technology Attachment，是一种连接硬盘、光驱的总线接口。它于 2001 年在PATA被串行 ATA 工作组缓慢减少其需求后推出。 SATA比PATA有更多的优势，使得它的需求更多。
以下是 PATA 和 SATA 之间的一些差异：
| S.NO | PATA | SATA |
|---|---|---|
| 1. | PATA stands for Parallel Advanced Technology Attachment. | SATA stands for Serial Advanced Technology Attachment. |
| 2. | It is a 40 pin connector. | It is a 7 pin connector. |
| 3. | It is high in cost. | It is cheaper in cost. |
| 4. | The speed of data transfer is lower. | The speed of data transfer is higher. |
| 5. | Power consumption is more. | Power consumption is less. |
| 6. | The cable size is bigger. | The cable size is smaller. |
| 7. | It doesn’t have the feature of hot swapping. | It has the feature of hot swapping. |
| 8. | External hard drives cannot be used. | External hard drives can be used. |