Toshiba MQ04ABB400 4TB 2.5" SATA III 5400RPM NCQ HDD / Hard Disk Drive

Toshiba MQ04ABB400 4TB 2.5-inch SATA Hard Drive

The Toshiba MQ04ABB400 provides 4TB of high-capacity storage in a compact 2.5-inch hard drive design, making it well suited to notebooks, compact desktop systems, and other space-constrained devices requiring substantial local storage. Operating at 5,400RPM and using a SATA 6Gbit/s interface with a 128MiB buffer, the MQ04ABB400 combines practical storage capacity with the low-power characteristics and quiet operation associated with Toshiba's MQ04AB series. Toshiba's published MQ04AB documentation covers capacities up to 2TB, while the MQ04ABB400 is the 4TB member of the same family and retains the core 2.5-inch SATA architecture.

Using 512e Advanced Format technology and Drive-Managed SMR recording, the MQ04ABB400 is designed to provide high storage density while maintaining a low operational power profile compared with traditional 3.5-inch desktop HDDs. Shock sensors help protect the drive against excessive shock events, while SMART support enables drive health monitoring. Its 4TB capacity provides ample room for documents, media libraries, backups, applications, and other large collections of data without requiring a larger 3.5-inch drive.

High-Capacity 4TB Storage

With 4TB of storage capacity, the MQ04ABB400 provides substantial space for files, photographs, videos, music, backups, and other digital content. Its 2.5-inch form factor allows this capacity to be integrated into compact systems where a traditional 3.5-inch desktop hard drive would not be suitable.

Compact 2.5-inch Design

The MQ04ABB400 uses a 2.5-inch form factor and is designed for applications where physical space, power consumption, and storage capacity are important considerations. The 4TB model measures approximately 15mm in height, making it particularly suited to compatible notebooks, compact PCs, external enclosures, and other systems designed to accommodate thicker 2.5-inch drives.

5,400RPM SATA Performance

Operating at 5,400RPM, the MQ04ABB400 balances practical mechanical storage performance with power efficiency and quiet operation. Its SATA 6Gbit/s interface provides a high-speed connection to compatible host systems, while the MQ04AB series specifies typical internal transfer speeds of approximately 819.7–1,733.6Mbit/s depending on operating conditions.

128MiB Buffer and NCQ

A 128MiB buffer helps manage data transfers between the drive and host system, while Native Command Queuing (NCQ) improves command handling by allowing the drive to optimise the order in which queued operations are processed. Together, these technologies help the MQ04ABB400 deliver consistent performance for everyday storage workloads.

Drive-Managed SMR Technology

The MQ04AB family uses Drive-Managed Shingled Magnetic Recording (SMR) technology to increase storage density. SMR overlaps magnetic tracks to accommodate more data within the available recording surface, making it well suited to high-capacity storage applications where maximising capacity within a compact drive is a priority.

Low-Power and Quiet Operation

Designed with mobile and compact computing environments in mind, the MQ04AB series is engineered for lower power consumption and quieter operation compared with traditional 3.5-inch desktop HDDs. The published MQ04AB specifications give a typical low-power idle consumption of 0.60W, helping make the drive suitable for systems where energy efficiency and acoustic performance are important.

Compatibility

The Toshiba MQ04ABB400 uses a standard SATA interface and 2.5-inch form factor, making it suitable for compatible notebooks, slim-line desktop PCs, all-in-one systems, external drive enclosures, and other devices supporting 2.5-inch SATA HDDs. As a 15mm-high drive, physical clearance should be checked before installation, particularly in thin laptops and compact systems designed for 7mm or 9.5mm drives.

• Large 4TB capacity.
• 2.5-inch form factor.
• Approximately 15mm height.
• SATA 6Gbit/s interface.
• 5,400RPM rotational speed.
• 128MiB buffer.
• 512e Advanced Format.
• Drive-Managed SMR technology.
• Native Command Queuing (NCQ).
• SMART drive health monitoring.
• Shock sensors for protection against excessive shock events.
• Low-power 2.5-inch HDD design.
• Typical 0.60W low-power idle consumption.