3.2Jumper settings

3.2.1Master/slave configuration

Use the options jumper block shown in Figure 6 to configure the drive for operation. This jumper block is the 4-pin header adjacent to pins 1 and 2 of the I/O signal pins. For additional information about using the Cable select option, see Section 3.2.2.

The “Master or single drive” option is the factory default setting.

Drive is master (or single drive)

Drive is slave

Cable select

Figure 6. Jumper settings

3.2.2Cable-select option

Computers that use cable select determine the master and slave drives by selecting or deselecting pin 28, CSEL, on the interface bus. Master and slave drives are determined by their physical position on the cable. To enable cable select, set a jumper as shown in Figure 6. Refer to your computer manual to determine whether your computer supports this option.

3.3Drive mounting

You can mount the drive using four screws in the side-mounting holes or four screws in the bottom-mounting holes. See Figure 7 for drive mounting dimensions (dimensions in inches with mm in parentheses). Follow these important mounting precautions when mounting the drive:

Allow a minimum clearance of 0.030 inches (0.76 mm) around the entire perimeter of the drive for cooling.

Use only M3 x 0.5 mounting screws.

Do not overtighten the mounting screws (maximum torque: 4.0 inch-lb).

Four (4) threads (0.080 inches) minimum screw engagement recommended.

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Seagate ST9100826A, ST960814A, ST980821A Jumper settings, Drive mounting, Master/slave configuration, Cable-select option

ST940811A, ST960814A, ST9120826A, ST980821A, ST9100826A specifications

Seagate's ST9100826A, ST980821A, ST9120826A, ST960814A, and ST940811A hard drives represent some of the company's commitment to providing reliable and high-performance storage solutions. Each model features distinct specifications and technologies that cater to various data storage needs.

The ST9100826A is a 100 GB hard drive that utilizes a 7200 RPM spindle speed, ensuring quick data access and transfer rates. With an IDE interface, this drive supports a data transfer rate of up to 100 MB/s, making it suitable for intensive applications. Additionally, the ST9100826A comes equipped with a 2 MB cache, optimizing data retrieval speeds and enhancing overall performance.

Moving to the ST980821A, this 80 GB drive also operates at 7200 RPM and features a similar IDE interface, which offers compatible integration with various systems. Designed with reliability in mind, it boasts a mean time between failures (MTBF) rating of 1 million hours, appealing to users who prioritize durability. This drive’s compact size allows it to fit seamlessly into a range of configurations, from personal computers to external enclosures.

The ST9120826A, with a substantial capacity of 120 GB, continues the trend of high-performance drives in this lineup. Its 7200 RPM speed and 2 MB cache ensure that users experience efficient data handling. With a more advanced read/write head technology, the drive also minimizes noise during operation, making it suitable for both desktop environments and home media centers.

The ST960814A comes with a 60 GB storage capacity and features an ultra-slim design, making it an excellent choice for portable devices. Often favored by users needing external storage for laptops or gaming consoles, this model maintains a 5400 RPM speed while providing commendable performance and durability, making data retrieval swift and smooth.

Lastly, the ST940811A, featuring a compact 40 GB capacity, serves as a versatile option for users looking to upgrade their existing systems. With an IDE connection and a design focused on energy efficiency, this drive is perfect for economical builds while still providing good performance for standard applications.

In summary, Seagate’s ST9100826A, ST980821A, ST9120826A, ST960814A, and ST940811A each demonstrate innovative features and reliability across various storage needs. With diverse capacities, spindle speeds, and robust technologies, they solidify Seagate’s reputation as a leader in data storage solutions.