Choosing NAS storage & drives means deciding whether you want a four-bay NAS with included caddies or a specified 4TB unit with clearly listed network and device details. The QNAP TS-431P2 and WD My Cloud Home take different approaches, and the right choice depends on whether bay count, package contents, capacity, or price matters most.
Quick verdict
Choose the QNAP TS-431P2 Network Attached Storage NAS 4-Bay Personal Cloud when the four-bay format and included caddies are central to your plan. Its described package does not include drives or a power adapter, so those omissions should shape the decision.
Choose the WD My Cloud Home (WDBVXC0040HWT-00) 4TB NAS - TESTED when you want a named-capacity NAS with PC and Mac compatibility, Ethernet, USB 3.0, and Cloud Storage listed among its attributes. It also carries the lower listed price. Both units are marked Used, so condition is not a differentiator between them.
Compact comparison
| Comparison point | QNAP TS-431P2 | WD My Cloud Home |
|---|---|---|
| Listed price | USD 169.95 | USD 149.99 |
| Condition | Used | Used |
| Stated type or platform | NAS (Network Attached Storage) | PC, Mac |
| Notable listed details | 4-Bay Personal Cloud; four caddies included | 4TB NAS; Cloud Storage; HDD support |
| Interfaces or power detail | Power adapter not included | Ethernet, USB 3.0; replacement power cable |
Where each product wins
QNAP wins for a bay-oriented NAS plan
The QNAP's four-bay title and four included caddies make it the more relevant choice for shoppers organizing their decision around multiple drive bays. The description is also clear that no drives and no power adapter are included, which makes package planning essential. That can suit someone who wants to source those pieces separately, but it is a meaningful limitation for anyone expecting a more complete hardware package.
WD wins for defined capacity and device details
The WD My Cloud Home stands out for its named 4TB capacity and its explicit PC and Mac compatibility. Ethernet, USB 3.0, HDD support, and Cloud Storage are also identified. Its description says it connected to a network through Ethernet, reached the WD My Cloud Home app and other network-connected devices, and stored and removed files without issues. The $19.96 lower listed price reinforces its price-first case without changing what it is designed around.
Product notes
QNAP TS-431P2 Personal Cloud NAS

The QNAP TS-431P2 is the one to choose when the four-bay format is the deciding feature. Its description confirms that four caddies are included, giving the package a concrete accessory advantage for a shopper planning around bay count. The limitation is equally concrete: drives and the power adapter are not included. In practical buying terms, the described contents center on the NAS unit and caddies rather than a package containing those additional pieces. The Personal Cloud wording is part of the product title, while its stated type is NAS (Network Attached Storage). Its Used condition matches the WD, so that detail does not give QNAP an edge. At USD 169.95, it asks for the higher listed price, making its four-bay design the main reason to select it.
WD My Cloud Home 4TB NAS

WD My Cloud Home makes the most sense for shoppers prioritizing the named 4TB capacity and direct device details. It is identified for PC and Mac, supports HDD, and lists Ethernet and USB 3.0 interfaces alongside Cloud Storage. The description adds that the unit was able to connect through Ethernet, broadcast to the WD My Cloud Home app and other network-connected devices, and store and remove files without issues; the title also marks it TESTED. Its limitation is format: it is presented as a 4TB NAS rather than the QNAP's four-bay design, so bay count should steer shoppers toward QNAP instead. The replacement power cable is specifically described, and the Used condition is shared by both choices.
Final choice by use case
- Choose QNAP TS-431P2 if the four-bay NAS format and four caddies are the reason you are shopping, and you are prepared for the package's lack of drives and power adapter.
- Choose WD My Cloud Home if the named 4TB capacity, PC and Mac compatibility, network interfaces, and Cloud Storage details match your priorities.
- Choose WD for price if the lower listed amount is decisive: the difference between the two prices is $19.96.
The short version is simple: QNAP is the bay-focused choice, while WD is the lower-priced, defined-capacity choice with more explicit device and interface details.