Choosing NAS storage & drives starts with a practical question: do you need a device built around centralized network storage, or is the condition and format just as important as the NAS label? The Seagate BlackArmor NAS 400 series is aimed at the first need, but its used condition and External Drive classification deserve attention before you decide.
Quick verdict
The Seagate BlackArmor NAS 400 series is worth considering if your priority is a named network attached storage device for organizing and managing data across a network. Its listed price is USD 39.00, giving the purchase a clear dollar amount to weigh against your requirements. The main reservation is equally clear: it is listed as used, so shoppers seeking new hardware should treat that condition as a deciding factor rather than an afterthought.
Seagate BlackArmor NAS 400 series

The Network Attached Storage (NAS) device, Seagate BlackArmor NAS 400 series is described as a centralized storage and management solution for a network. That makes the NAS designation a concrete reason to choose it when your goal is to place storage at the center of a home network rather than shop for a generic storage accessory. The limitation is its listed used condition, which may not suit a buyer who wants a new unit.
Who it suits
This NAS is a reasonable fit for a shopper looking for a home NAS device with a clearly stated network-storage purpose. The product name directly identifies the Seagate BlackArmor NAS 400 series and its NAS role, while the description focuses on centralized data storage and management. Those details make the intended use easier to understand for someone planning around shared or centralized files.
It is less suitable for a buyer whose first priority is avoiding used hardware. That is not a performance judgment; it is simply the most important purchase-condition trade-off attached to the listed unit.
What stands out
The strongest point is the clarity of the product's stated job. Rather than relying on a vague storage label, it is explicitly presented as a Network Attached Storage device. The description also connects it with storage and management over a network, which is the central reason many shoppers consider a home NAS.
Its type is identified as an External Drive alongside the NAS device title. That wording is part of the buying decision, especially for shoppers comparing NAS-oriented storage with other forms of network storage. The Seagate BlackArmor NAS 400 series name also gives the device a specific series identity instead of leaving the product category as the only point of reference.
Meaningful trade-offs
The key trade-off is straightforward: the product offers a clearly stated NAS purpose, but the listed condition is used. The External Drive type is another concrete part of the description to factor into your expectations about the device's format. Avoid treating the NAS label alone as a promise of features that are not stated.
Bottom line
The Seagate BlackArmor NAS 400 series makes the most sense when centralized network storage is your main goal and the purchase trade-offs fit your plans. At the listed USD 39.00 price, its appeal rests on the explicitly named NAS function and network-storage description-not on assumptions about unlisted capabilities.