ASUSTOR · NAS buying guide
ASUSTOR AS5402T · Exact identity: AS5402T
2 primary bays · Intel Celeron N5105 · 4-core · 4GB DDR4 · max 16GB · 2 × 2.5GbE · Diskless: hard drives cost extra
Catalog amount: $370.99 · recent · Price record: 2026-10-09T03:56:19.069494+00:00. Tax and shipping excluded.
Price observed at the store on the shown date. Confirm the current price and availability at the store.
AS5402T: specifications and dated store comparison →Diskless 2-bay N5105 NAS with 4GB (max 16GB), four M.2 slots and dual 2.5GbE
AS5402T; 4GB (1 x 4GB); diskless; 2 SATA bays
The AS5402T is the 2-bay N5105 box to buy when you will use dual 2.5GbE, M.2 and a RAM upgrade. A single 2.5GbE port already hit 295 MB/s reads from SSD/NVMe in Tech Advisor's 2023 test; bonding is a separate two-client story. HDD traffic stays drive-limited. 4GB is tight for lots of apps. See the review evidence ↓
2 SATA bays set the main capacity and redundancy choices. A two-drive mirror stores one drive’s worth of data before overhead; there is no SATA RAID 5/6 path. Use the model compatibility list before buying drives.[1]
Fast network ports and SSD slots add value only when the client, switch and workload can use them.[1]
2 x 2.5 Gigabit Ethernet (2.5G/1G/100M); confirm the rest of the network and drive layout.[1]
Follow any specification for its full conditions and sources.
Living with it
2 SATA bays set the main capacity and redundancy choices. A two-drive mirror stores one drive’s worth of data before overhead; there is no SATA RAID 5/6 path. Use the model compatibility list before buying drives.[1]
2 x 2.5 Gigabit Ethernet (2.5G/1G/100M). A port rate is a link rating; protocol overhead, client storage and the array reduce file-transfer rates. Combining ports requires suitable network/client configuration.[1]
The author reports consistent HDD-limited transfers and successful Plex hardware transcoding during personal use.[4]
Android Central used two6TB IronWolf drives and reported good Plex use without quantified codec tests. Tech Advisor measured single-port NVMe transfers of295/280 MB/s; its cached HDD reached227/160 MB/s on2.5GbE. LinuxLinks measured36.8W during an HDD copy and15.4W with disks hibernating on a different four-drive configuration.[4][5][6]
Our buying advice combines official specifications with the original reviews below. We have not tested this product ourselves. Expand a review for its setup, measurements and limitations.
Harish JonnalagaddaMar 4, 2024
The author reports consistent HDD-limited transfers and successful Plex hardware transcoding during personal use.
Read the original reviewAS5402T — Android Central original review
Tested: Two 6TB IronWolf HDDs; Windows client SSD; 2.5GbE; approximately three months of use. RAID is not disclosed.
Applies to: Exact enclosure model; conclusions apply to the stated tested storage and network setup.
Limits to keep in mind
Mark PickavanceSep 19, 2023
Over a single 2.5GbE LAN port, switching the source to a SATA SSD achieved 295 MB/s read and 165 MB/s write. NVMe-only layout reached 295 MB/s read and 280 MB/s write on that same single port. Mechanical drives are described around 150 MB/s each. Two ports can be bonded so two clients each see about 290 MB/s — that is not the 295 figure. SMB Multichannel was not tested.
Read the original reviewTech Advisor: AS5402T 2.5GbE vs SSD path
Tested: AS5402T stock 4GB. Author used a 1.5TB WD Green HDD and two Crucial P3 M.2 NVMe drives for caching, connected via an Asustor 2.5GbE path. SMB Multichannel was not configured in the test environment. Network switch: ASUSTOR ASW205T.
Applies to: Exact 4GB SKU. The 295 MB/s read is a SINGLE LAN port result (SATA SSD source over 2.5GbE, and again on NVMe). Channel bonding is discussed separately as two clients around 290 MB/s each and is not this measurement.
| Measurement | Result | Conditions & source location |
|---|---|---|
| Single 2.5GbE port SATA SSD source read/write | 295 / 165 MB/s | Stock 4GB AS5402T; not channel-bonded; SMB Multichannel not configuredSwitching over to using a SATA SSD as the source over 2.5GbE |
| Single 2.5GbE port NVMe-only read/write | 295 / 280 MB/s | Same single LAN connectionReorganising these drives to only use the NVMe drives |
| WD Green HDD with two Crucial P3 cache drives, single-port read/write | 118/113 MB/s on 1GbE; 227/160 MB/s on 2.5GbE | Author switched network speed with the disclosed cached-HDD layout; not an uncached HDD measurement.Performance: In my testing paragraph |
Limits to keep in mind
Steve EmmsMar 18, 2024
Power with 2×6TB 7200RPM HDD + 2× NVMe, EuP off, WOL/WOW on: 36.8 W copying 9GB HDD-to-HDD; 29.2 W in operation with disks idle; 22.4 W at 100% CPU in VirtualBox using the stress utility with mechanical disks hibernating; 15.4 W disks in hibernation; 0.6 W S3. The 22.4 W CPU-load figure is not the same disk state as 29.2 W idle-with-disks-spinning.
Read the original reviewLinuxLinks: AS5402T power states
Tested: AS5402T 4GB populated with 2×6TB 7200RPM HDD and 2× NVMe SSD. All power figures: EuP disabled, WOL and WOW enabled. Supplied with ADM4.2.6; author installed4.2.7.RR41 and4.2.7.RRD1 while testing. Final layout used separate NVMe volumes1/2 and HDD volumes3/4.
Applies to: Exact model. Power numbers are this author's states, not the manufacturer 22.9/12.7 W IronWolf rating.
| Measurement | Result | Conditions & source location |
|---|---|---|
| Copy 9GB HDD to HDD | 36.8 W | 2×6TB 7200RPM + 2 NVMe; EuP off; WOL/WOW on; mechanical disks activeAS5402T Power Consumption Watts |
| In operation, disks idle | 29.2 W | Same population and EuP/WOL/WOW; disks not the hibernation statePage 4 table |
| 100% CPU VirtualBox (stress), mechanical disks hibernating | 22.4 W | Footnote 1: stress utility, all CPU cores, HDDs hibernating, 2 NVMe present, EuP off, WOL/WOW onTable footnote 1 |
| Disks in hibernation / S3 | 15.4 / 0.6 W | Same EuP/WOL/WOWPage 4 table |
Limits to keep in mind
Alex KidmanDec 26, 2025
Author used RAID1 and stock4GB with one NVMe read-cache device. AiRemote successfully controlled the HDMI Portal interface. The article reports lower copy performance on1GbE, but the numerical chart has a model-label conflict.
Read the original reviewTweakTown: AS5402T stock 4GB RAID 1 install
Tested: Stock4GB AS5402T, two Seagate IronWolf4TB HDDs loaned for review, RAID1; one Samsung990 EVO Plus2TB installed for read caching. Large-file network copies compared2.5GbE with1GbE; client, file size and ADM build not disclosed.
Applies to: Exact-model article, but throughput chart title says AS5402T while its row label says AS5404T; numerical attribution is unresolved.
Limits to keep in mind
Examples ordered by recorded drive unit price, which may be historical or an editorial reference. Check capacity, vendor compatibility, included storage and price evidence before choosing. These are component checks, not compatibility certifications.
Component total: $680.97 · historical · Oldest price record: 2026-10-09T01:23:41.974420+00:00 · 4TB raw, before redundancy.
Historical price estimate. Calculated from separately purchased components, not a complete-system offer. NAS price record: 2026-10-09T03:56:19.069494+00:00; drive price record: 2026-10-09T01:23:41.974420+00:00. Price observed at the store on the shown date. Confirm the current price and availability at the store. Historical price observation. Recheck the price and availability before buying; this is not a current offer. Recheck component prices, stock, shipping and tax at the stores before purchase; even recent checks do not guarantee live prices.
Component total: $750.97 · recent · Oldest price record: 2026-10-09T03:56:19.069494+00:00 · 8TB raw, before redundancy.
Dated price estimate. Calculated from separately purchased components, not a complete-system offer. NAS price record: 2026-10-09T03:56:19.069494+00:00; drive price record: 2026-10-09T03:58:24.994342+00:00. Price observed at the store on the shown date. Confirm the current price and availability at the store. Price observed at the store on the shown date. Confirm the current price and availability at the store. Recheck component prices, stock, shipping and tax at the stores before purchase; even recent checks do not guarantee live prices.
Component total: $760.97 · historical · Oldest price record: 2026-09-27T13:58:17.239646+00:00 · 8TB raw, before redundancy.
Historical price estimate. Calculated from separately purchased components, not a complete-system offer. NAS price record: 2026-10-09T03:56:19.069494+00:00; drive price record: 2026-09-27T13:58:17.239646+00:00. Price observed at the store on the shown date. Confirm the current price and availability at the store. Historical price observation. Recheck the price and availability before buying; this is not a current offer. Recheck component prices, stock, shipping and tax at the stores before purchase; even recent checks do not guarantee live prices.
Before you buy
The selected configuration is diskless. Include drives, independent backup capacity and any network adapter or switch upgrade.[2]
Four surveillance-camera licenses are included; more channels need licenses. Cloud storage and optional services have separate terms.[1]
AS5402T; 4GB (1 x 4GB); diskless; 2 SATA bays Check the total delivered price at the store.
Lowest observed price
$370.99
In stock at observation
Currency not confirmed
3 stores · 1 recent price observation
Seller not recorded
$370.99
Observed price
Currency not confirmed
In stock at observation · Condition not recorded
Observed Oct 9, 2026, 3:56:19 AM UTC[8]
View exact product at B&H PhotoSold by Newegg
$370.99
Historical price
Stock not confirmed · New
AS5402T; factory memory; diskless enclosure
Observed shipping: $0.00
Observed Oct 9, 2026, 1:10:08 AM UTC[9]
View exact product at NeweggSold by aaawave
$406.99
Historical price
Currency not confirmed
Stock not confirmed · Condition not recorded
Observed Sep 27, 2026, 1:42:58 PM UTC[10]
View exact product at Best BuyPrices are dated observations. Confirm the model, seller, condition, stock and delivered total at the store. Older prices remain visible as history. Links may earn a commission.
No. This page covers the factory-memory diskless enclosure with 2 SATA bays. Check the exact configuration in each seller listing.[2]
16GB (2 x 8GB) Support mixed capacity. Follow the supported module configuration; third-party RAM compatibility is not guaranteed by a matching capacity alone.[1]
Tech Advisor (19 Sep 2023): 295 MB/s read / 165 MB/s write from a SATA SSD over ONE 2.5GbE port; NVMe-only 295/280 MB/s on that same single port. Bonded two-client ~290 MB/s each is a different, unmeasured-here claim. HDDs ~150 MB/s each.[5]
No. Btrfs snapshots help recover earlier file states on the NAS; keep another copy on separate storage and test restoration.[1]
Research updated Sep 11, 2026. Individual source check dates are listed below. Measurements belong to the named reviewers; tested configurations and software versions may differ from the product you buy.
Checked Sep 11, 2026 · Live hardware/software tables 2026-09-11
Checked Sep 10, 2026 · Product title; MFR number; In the Box; Specifications → memory and drive bays. Web reader opened exact PDP; cached price date unknown, so no current price or stock asserted.
Checked Sep 10, 2026 · Model and current .product-buy-box: Sold by PlatinumMicro, displayed USD price and Add to cart. ItemDetail seller agrees where provided; other-seller popovers are excluded.
Checked Sep 10, 2026 · Original configuration, performance and limitations sections
Checked Sep 11, 2026 · Performance: cached HDD, SATA SSD and NVMe single-port results; SMB multichannel explicitly untested.
Checked Sep 11, 2026 · Power table page 4
Checked Sep 11, 2026 · Wayback capture
Checked Oct 9, 2026 · Captured observation; sha256:1c94ec5037ab47a0a8f60afed0defa11cb33d08e885552a335d5f933c0c2483e
Checked Oct 9, 2026 · newegg-main-item; sha256:57768ef3e991255df9982f61b25d887e68d614787096398887eac8d643dd5745
Checked Sep 27, 2026 · Captured observation; sha256:da75b78b8614730d0965867140f01eaa39f1fd9d96d38dd9fe54b947a7c723ce
Independent review completed for the scope recorded in the audit.
Source evidence and review history (JSON)