List of Toshiba part number codes
This is a list of part number schemes used by Toshiba. The part number is identified as the string of characters starting with "HDE" or "HDK". It is specifically called the "PART NO." on Fujitsu label style drives, but is unlabelled on all other label types.
The part number is a Fujitsu drive parameter. However, since 2011, the part number's coding changed to be identical to native Toshiba.
Pre-2011 part numbers
Prior to 2011, the part number was split into three blocks (except on Fujitsu HDAs, where the coding does not change, but is concatenated). Also, prior to 2011, Fujitsu drives produced under Toshiba still used the Fujitsu style part numbers (for example, "CA07173-B48000LF").
2011 - present part numbers
Since 2011, the part number is concatenated. This part number scheme is used on all models that use either the post-2011 OEM model number scheme (e.g. MG08ADA800E) or retail model number scheme (e.g. HDWR480).
Prefix: HD
All part numbers begin with HD.
Third letter: Consumer vs enterprise
The third letter is different depending on whether a consumer-oriented HDA, or enterprise HDA, is in use. Consumer HDAs include all Toshiba 2.5" hard drives aimed at laptops or external drives, as well as all drives using Hitachi HDAs. Enterprise HDAs include all those developed by Fujitsu, including 2.5" 10,000 RPM drives and enterprise 3.5"s.
| Code | Type | Example image |
|---|---|---|
| E | Enterprise (Fujitsu HDAs) | |
| K | Consumer (Hitachi and Toshiba 2.5" laptop HDAs) |  |
Fourth letter: Form factor or family code
The fourth letter defines the platform code. This code's meaning depends on what the third letter was. If the third letter is a K, then this digit represents the form factor and z-height (7 mm, 9.5 mm, 15 mm, and for example, HDKCB on MQ01ABF050 and MQ04ABF100). If the third letter is E instead, then this digit represents the family (X300, N300, MG, and for example, HDELX, HDEPZ). It can be shared across compatible OEM and retail families.
Form factor codes
| Code | Form factor | Example image |
|---|---|---|
| C | 2.5" 7 mm |  |
| G | 2.5" 9.5 mm | |
| D | 2.5" 9.5 mm (4,200 RPM only) | |
| B | 2.5" 12.5 mm | |
| F | 2.5" 15 mm | |
| P | 3.5" 26.1 mm |  |
Family codes
| Code | OEM family | Retail family | Example image |
|---|---|---|---|
| B | Toshiba AL | None | |
| J | Toshiba MG08-D | None | |
| L | Toshiba MD08-D | Toshiba X300 (HDWR440, HDWR460 and HDWR480 only) | |
| M | Toshiba MN08-D | Toshiba N300 (MN08-D rebrands HDWG440, HDWG460 and HDWG480 only) | |
| P | Toshiba MG (except MG08-D) | None | |
| R | Toshiba MC04 | None | |
| T | Toshiba MD (e.g. MD04, MD06), including 7,200 RPM -V suffix families | Toshiba X300 (see L code for exceptions) and Toshiba S300 Pro | |
| U | Toshiba MD04-V | Toshiba S300 (5,400 RPM) | |
| W | Toshiba MA04 | None | |
| X | Toshiba MN | Toshiba N300 (see M code for exceptions) |
Fifth letter: RPM code or generation code
The fifth letter's definition depends on the third letter. If K, it is the same as the RPM code (even if the model number does not contain it). For example, all 4,200 RPM drives get A, 5,400 RPM ones get B and 7,200 RPMs get C. If the third digit is E, then instead, this letter defines the generation (of enterprise drive, which is also reflected on any binned relabels) and interface. Note that Toshiba MG08 and Toshiba MG08-D, despite being completely different, share the same generation code, and instead new family codes distinguish them.
| Code | Generation | Interface | Example image |
|---|---|---|---|
| Q | 03 | SATA | |
| R | 04 (Tomcat, <= 5 platters) | SATA | |
| E | 04 (Tomcat, <= 5 platters) | SAS | |
| S | 04 (Tomcat-R, 6 platters) | SATA | |
| F | 04 (Tomcat-R, 6 platters) | SAS | |
| T | 05 | SATA | |
| V | 06 | SATA | |
| K | 06 | SAS | |
| W | 07 | SATA | |
| M | 07 | SAS | |
| X | 08 | SATA | |
| N | 08 | SAS | |
| Z | 09 | SATA |
Sixth and seventh digits: Unique code for capacity
The sixth and seventh letters are a unique code that depend on the capacity. These are different across generations, though are compatible within families.
Eighth letter: Customer
The eighth letter depicts the customer. While, in most cases, this is the same as the last letter of the drive revision (even if absent), there may be differences. These are recorded below.
| Code | Actual customer | Expected code |
|---|---|---|
| Z | Retail (applies to all retail families except X300 Pro and N300 Pro) | A |
| B | X300 Pro and N300 Pro | N/A |
| G | All non-retail enterprise HDA drives | N/A |
Ninth letter: Target market code
While the true purpose of this letter is not known, it appears to reflect the intended usage of the drive.
| Code | Target |
|---|---|
| C | Retail (prior to 2018) |
| E | Enterprise |
| K | PCs |
| M | PCs (DT02) |
| N | NASes |
| P | Performance |
| S | Surveillance |
Tenth digit
The purpose of this digit is not known, but usually is 0, 3 or 5.
Eleventh digit
The purpose of this digit is not known, but usually is 1.