The catch
ASUSTOR Lockerstor 4 Gen2+ AS6704T v2
Only two USB 10Gbps ports, and the optional 10GbE card displaces all four internal NVMe positions.
Side by side
ASUSTOR AS6704T v2 vs AS5404T: A backup setup that wants native 5GbE or a third fast USB connection
Quick verdict
The AS6704T v2 is the one if you plan a properly equipped 5GbE desk. The AS5404T suits a network that stays at 2.5GbE or below, where its third USB 10Gbps port helps with the devices you attach. Four SATA bays, four NVMe slots, the N5105 and a 16GB RAM ceiling are common to both. Note that the Lockerstor's optional 10GbE card removes the NVMe board.
Before you buy
Why, and what it costs you
A fast SSD workspace can still stop at the laptop adapter
If your laptop adapter and switch are 2.5GbE, both NAS models meet the same link ceiling even with fast NVMe storage inside. AS6704T v2 becomes useful when the complete path moves to 5GbE. For a home where the archive is mainly a destination for finished work, compare the complete AS5404T package with the cost of that network upgrade before taking money from the independent-backup budget.
Where this comes from
Native link-rate intersection. Minimum of client, switch and NAS path bounds the negotiated connection. This is not a measured transfer-rate prediction and says nothing about internet access speed.
The catch
ASUSTOR Nimbustor 4 Gen2
Its native Ethernet ports stop at 2.5GbE. Faster client hardware alone cannot make those ports run at 5GbE.
ASUSTOR Lockerstor 4 Gen2+ AS6704T v2
- Why pick it
- Your computer and the entire wired path can take advantage of native 5GbE, and internal NVMe storage stays in place.
- The slightly narrower 170 mm body is what you need, and you have room for its extra height.
- The catch
- Only two USB 10Gbps ports, and the optional 10GbE card displaces all four internal NVMe positions.
ASUSTOR Nimbustor 4 Gen2
- Why pick it
- Your household network will stay at 2.5GbE or slower, so faster NAS ports would not raise its link rate.
- You have three compatible USB 10Gbps devices that need direct ports, with no assumption that a hub will work.
- The catch
- Its native Ethernet ports stop at 2.5GbE. Faster client hardware alone cannot make those ports run at 5GbE.
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What this page compares
Lockerstor 4 Gen2+ and Nimbustor 4 Gen2 weighed for a home archive. The question is whether native 5GbE helps your desk or an extra USB port counts for more.
Both are four-bay Intel N5105 NAS models with four NVMe positions, 4GB supplied RAM and HDMI. The extra networking in Lockerstor needs to solve a real bottleneck to justify the upgrade.
Which one fits
Pick the situations that sound like you
You need a fully equipped 5GbE editing path
Lockerstor has 5GbE built in. Nimbustor's built-in ports top out at 2.5GbE.
- ASUSTOR Lockerstor 4 Gen2+ AS6704T v2
- Better fit
- ASUSTOR Nimbustor 4 Gen2
- Not suitable
Direct ports are needed for three compatible fast USB devices
Nimbustor offers three 10Gbps ports. Lockerstor offers two, so it needs some other connection arrangement that you have verified.
- ASUSTOR Lockerstor 4 Gen2+ AS6704T v2
- Caution
- ASUSTOR Nimbustor 4 Gen2
- Better fit
Your current home network remains at 2.5GbE
Either one reaches that link rate. What the NAS port is labeled does nothing about the bottleneck you already have.
- ASUSTOR Lockerstor 4 Gen2+ AS6704T v2
- Good
- ASUSTOR Nimbustor 4 Gen2
- Good
You need more than 16GB of supported RAM
Both top out at 16GB, whatever their network port speed.
- ASUSTOR Lockerstor 4 Gen2+ AS6704T v2
- Not suitable
- ASUSTOR Nimbustor 4 Gen2
- Not suitable
In practice
Differences you will notice
A fast SSD workspace can still stop at the laptop adapter
If your laptop adapter and switch are 2.5GbE, both NAS models meet the same link ceiling even with fast NVMe storage inside. AS6704T v2 becomes useful when the complete path moves to 5GbE. For a home where the archive is mainly a destination for finished work, compare the complete AS5404T package with the cost of that network upgrade before taking money from the independent-backup budget.
How we worked this out
Native link-rate intersection. Minimum of client, switch and NAS path bounds the negotiated connection. This is not a measured transfer-rate prediction and says nothing about internet access speed.
A third fast USB device can make the simpler network box more convenient
A desk using two attached backup drives and a compatible USB card reader has three high-speed USB connections to place. AS5404T has three direct 10Gbps USB ports. AS6704T v2 has two plus a USB 2.0 port, so the same arrangement needs a different connection plan or a separately verified hub. Do not assume all three devices can transfer at their headline rates together.
How we worked this out
Physical direct-port budget, with each example device and simultaneous support still requiring compatibility checks. No USB bus-throughput or backup-duration advantage is claimed.
A network upgrade does not add room for more applications
For a household combining photo backups with home-server apps, neither model raises the supported memory ceiling above 16GB. Both start with 4GB and use N5105. If memory is the known bottleneck, a compatible RAM upgrade or a different platform deserves attention before the Lockerstor network upgrade. Its taller body also matters if the NAS must fit an existing open shelf.
How we worked this out
Same CPU and supplied/maximum RAM, with 15.5 mm height difference. Hardware parity does not establish identical real performance. No health, noise or thermal benefit follows from the body size.
Option A
ASUSTOR, AS6704T v2
Lockerstor 4 Gen2+ AS6704T v2
Your computer and the entire wired path can take advantage of native 5GbE, and internal NVMe storage stays in place.
- Best for
- Your computer and the entire wired path can take advantage of native 5GbE, and internal NVMe storage stays in place.
Facts we checked
- Useful native link rate: Four SATA bays, four PCIe 3.0 x1 NVMe slots and two native 5GbE ports. Optional 10GbE requires removing the M.2 daughterboard.
- External device connections: HDMI 2.0b, two USB-A 10Gbps ports and one USB 2.0 port.
- Application headroom: Intel N5105. 4GB DDR4 supplied and 16GB maximum.
- Shared shelf dimensions: 185.5 x 170 x 230 mm, height x width x depth. Four SATA positions.
Option B
ASUSTOR, AS5404T
ASUSTOR Nimbustor 4 Gen2
Your household network will stay at 2.5GbE or slower, so faster NAS ports would not raise its link rate.
- Best for
- Your household network will stay at 2.5GbE or slower, so faster NAS ports would not raise its link rate.
Facts we checked
- Useful native link rate: N5105, 4GB DDR4 supplied and 16GB maximum. Four SATA and four PCIe 3.0 x1 M.2 slots. Two native 2.5GbE ports.
- External device connections: Three USB 10Gbps ports, HDMI 2.0b and body dimensions 170 x 174 x 230 mm, height x width x depth.
- Application headroom: N5105, 4GB DDR4 supplied and 16GB maximum. Four SATA and four PCIe 3.0 x1 M.2 slots. Two native 2.5GbE ports.
- Shared shelf dimensions: Three USB 10Gbps ports, HDMI 2.0b and body dimensions 170 x 174 x 230 mm, height x width x depth.
Spec by spec
Where they really differ
| Spec | ASUSTOR Lockerstor 4 Gen2+ AS6704T v2 | ASUSTOR Nimbustor 4 Gen2 | In practice |
|---|---|---|---|
| Useful native link rate | Four SATA bays, four PCIe 3.0 x1 NVMe slots and two native 5GbE ports. Optional 10GbE requires removing the M.2 daughterboard. | N5105, 4GB DDR4 supplied and 16GB maximum. Four SATA and four PCIe 3.0 x1 M.2 slots. Two native 2.5GbE ports. | A 2.5GbE client still negotiates at 2.5GbE. Native 5GbE needs a suitable client and complete path. |
| External device connections | HDMI 2.0b, two USB-A 10Gbps ports and one USB 2.0 port. | Three USB 10Gbps ports, HDMI 2.0b and body dimensions 170 x 174 x 230 mm, height x width x depth. | Nimbustor has three USB 10Gbps ports rather than two. A USB 2.0 port is not an equivalent third fast port. |
| Application headroom | Intel N5105. 4GB DDR4 supplied and 16GB maximum. | N5105, 4GB DDR4 supplied and 16GB maximum. Four SATA and four PCIe 3.0 x1 M.2 slots. Two native 2.5GbE ports. | The same processor and 16GB ceiling do not justify a larger application-capacity claim for Lockerstor. |
| Shared shelf dimensions | 185.5 x 170 x 230 mm, height x width x depth. Four SATA positions. | Three USB 10Gbps ports, HDMI 2.0b and body dimensions 170 x 174 x 230 mm, height x width x depth. | Lockerstor is 4 mm narrower but 15.5 mm taller. Depth is 230 mm on both before working clearance. |
Trade-offs
What each pick costs you
With ASUSTOR Lockerstor 4 Gen2+ AS6704T v2
- Both are sold diskless. Before ordering, confirm the exact model suffix, the RAM supplied, the seller, the return terms and whether the unit qualifies for US warranty. Drives, optional cards and memory upgrades all cost extra.
With ASUSTOR Nimbustor 4 Gen2
- Check the exact AS5404T diskless offer, current seller and US warranty eligibility. Drives, compatible RAM and external equipment are separate purchases.
Change of plan
When the answer changes
Your whole wired desk is moving to 5GbE
Go with ASUSTOR Lockerstor 4 Gen2+ AS6704T v2. With 5GbE built in, the internal NVMe board stays and the optional 10GbE card isn't needed.
Having three direct fast USB connections matters more than networking faster than 2.5GbE
Go with ASUSTOR Nimbustor 4 Gen2. The additional USB 10Gbps port is on Nimbustor.
Application memory beyond 16GB is your main limit
Neither model fits. The supported ceiling is the same on both.
Decision guide
Before you buy
You want a quicker home archive, but you don’t want to pay for a link your computer can’t use, nor give up a handy connection for your backup routine.
What this page can’t tell you
- The Ethernet figures show link rates. File-transfer speeds were not measured. Slowdowns can originate in client adapters, switches, cabling, disks, file sizes or concurrent work.
- Think of RAID, snapshots and ECC as extras that do not substitute for a separate backup. A tested copy belongs outside the NAS, protected from the same accident or account compromise.
- The shared processor and similar body size give neither model a measured application-speed or noise advantage.
By the numbers
What the data shows
What we found across the NAS devices we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| ASUSTOR Lockerstor 4 Gen2+ AS6704T v2 |
|
| |
| ASUSTOR Nimbustor 4 Gen2 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
ASUSTOR Lockerstor 4 Gen2+ AS6704T v2
Your computer and the entire wired path can take advantage of native 5GbE, and internal NVMe storage stays in place.
The slightly narrower 170 mm body is what you need, and you have room for its extra height.
See price & reviews on AmazonASUSTOR Nimbustor 4 Gen2
Your household network will stay at 2.5GbE or slower, so faster NAS ports would not raise its link rate.
You have three compatible USB 10Gbps devices that need direct ports, with no assumption that a hub will work.
See price & reviews on AmazonEach link opens in a new tab.
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