
Asustor AS6704T
Score: 79/100
Asustor AS5402T
Score: 82/100Rankings

The Asustor AS5402T is a high-performance 2-bay NAS with quad-core processing, dual 2.5 GbE, four M.2 NVMe slots and HDMI output, aimed at creators and small offices.

The Asustor Lockerstor 4 Gen2 (AS6704T) is a high-performance 4-bay NAS aimed at power users and small businesses, offering up to 88 TB raw capacity, extensive RAID options, dual 2.5 GbE networking and four M.2 NVMe slots. It delivers fast file transfers and 4K media handling, though it lacks native 10 GbE and requires tools for drive installation.
| Attribute | ![]() | ![]() |
|---|---|---|
88 TBbest | 48 TB | |
4best | 2 | |
2.5 Gbpsbest | 2.5 Gbpsbest | |
4best | 4best | |
4 GBbest | 4 GBbest | |
| ↓ lower better | 35 W | 22.9 Wbest |
| ↓ lower better | 17.6 dBbest | 18.6 dB |
3 yearsbest | 3 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Performance(2) | ||
Power Consumption (Active) (W) | 35 W | 22.9 W |
Noise Level (dB) | 17.6 dB | 18.6 dB |
Build & Design(2) | ||
Weight (kg) | 3.5 kg | 1.6 kg |
Power Supply Type | 90 W AC adapter | External 65W |
Connectivity(1) | ||
USB Ports | 2 | 3 |
Storage & Capacity(4) | ||
Maximum Raw Capacity (TB) | 88 TB | 48 TB |
Drive Bays | 4 | 2 |
RAID Support | Single, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 | RAID 0, RAID 1, JBOD, Single |
Supported Drive Types | 3.5"/2.5" SATA HDD/SSD | 3.5" and 2.5" SATA HDD/SSD |


Products in the top-left offer the best value (high score, low price).

Professional reviewers rate the AS6704T extremely highly, with PCMag giving it a perfect 5.0/5.0 "Exemplary" score for its blazing speeds, robust hardware and extensive app library.
Everyday users love the AS6704T's raw performance, flexible M.2 and 2.5 GbE options, and the breadth of apps that let them run Plex, Docker and VMs with ease.

Professional reviewers award it Editors' Choice for speed and expandability, noting the lack of RAID 5/6 and plastic housing as minor drawbacks.
Users praise the fast 4K streaming, M.2 flexibility and quiet design, while complaining about missing RAID 5 and the plastic exterior.
“high-performance design for intensive tasks like video editing”

“up to 590 MB/s read and 555 MB/s write speeds”

“smooth 4K streaming and transcoding”

