This document introduces the characteristics of Seagate U Series CE family hard drives, including ST380020ACE, ST360020ACE, ST340810ACE, ST320410ACE and other models.
This manual describes the functional, mechanical, and interface specifications for the four U Series CE Family hard‑disk drives. It includes detailed tables of capacity, performance, power consumption, environmental tolerances, and reliability data.
The document also covers handling precautions, jumper configurations for master/slave and cable‑select modes, mounting dimensions, ATA interface pinouts, and recommended power‑management settings. Figures illustrate typical current profiles, jumper settings, and mechanical dimensions.
| Formatted capacity | 80 GB (ST380020ACE), 60 GB (ST360020ACE), 40 GB (ST340810ACE), 20 GB (ST320410ACE) |
|---|---|
| Spindle speed | 5,400 RPM |
| Cache buffer | 2 Mbytes |
| Average seek time | 8.9 ms |
| Read/Write power consumption | 7.5 W |
| Operating temperature range | 0 °C to 60 °C (operating) |
| Typical weight | 680 g |
All four drives operate at 5,400 RPM.
Read and write operations each consume about 7.5 watts.
The ST380020ACE has a formatted capacity of 80 GB.