# 4TB Network NAS HDD SATA

- Category: Storage
- Brand: Western Digital
- Model: WDBMMA0040HNC-ERSN
- Part number: WDBMMA0040HNC-ERSN
- Price (US): currently unavailable
- Price last checked: 2026-08-06
- Rating: 5/5 from 2 Amazon reviews
- Warranty: 5 years
- Product page: https://buildmypc.net/component-details/storage/western-digital-wdbmma0040hnc-ersn/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | Western Digital |
| Model | WDBMMA0040HNC-ERSN |
| Maximum Capacity | 4 TB |
| Form Factor | 3.5" (HDD) |
| Cache Memory | 64 MB |
| Interface | SATA 6 Gb/s |

## Key Features

- Product Name: 4 TB Network Hard Drive for SOHO| Marketing Information: WD Network hard drives are the essential solution for NAS applications. These drives are cool and quiet, and offer optimum compatibility in 24x7 NAS systems with up to five bays.|
- Marketing Information: WD Network drives are specifically engineered for NAS systems with up to five drive bays. The drives are designed and extensively tested for compatibility in the unique 24x7 operating environment and demanding system requiremen
- Marketing Information: - Reduce your electricity bill and carbon footprint with WD Network drives. Innovative technology reduces power consumption and lowers the operating temperature, resulting in a more reliable and affordable solution for always o
- Marketing Information: - The secret is in the technology. Advanced firmware technology built into every WD Network hard drive, enables seamless integration, robust data protection and optimal performance for systems operating in NAS and RAID environm
- Drive Interface Standard: SATA/600| Network (RJ-45): No| Drive Type: Internal| Drive Width: 3.5| Height: 1| Width: 4| Depth: 5.8| Weight (Approximate): 1.52 lb| Package Contents: 4 TB Network Hard Drive for SOHO| Package Contents: Mounting Screws| Pa

---

Source: BuildMyPC (https://buildmypc.net/) — free PC parts compatibility checker. Prices update daily. As an Amazon Associate, BuildMyPC earns from qualifying purchases.