QNAP TS-435XeU

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Status: Currently sold

A short-depth 1U rackmount NAS with four hot-swap bays, two 10GbE SFP+ ports and two M.2 slots for NVMe SSDs. Memory goes up to 32 GB with ECC support - error-correcting RAM that guards against data corruption. It uses a quad-core ARM processor, so app support is narrower than on Intel models, and there's no PCIe slot.

Bays	4
CPU	Marvell CN9130; Marvell CN9131
Cores / Threads	4 / 4
RAM	4 GB
Product category	Business Storage
Badge	Short Depth
Hardware support status	Full
OS/app support	Full
Technical support end	Active
Recommended replacement	-
Release year	2022
RAID levels	Single, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10
RAM (max)	32 GB
Memory slots	1
Memory generation	DDR4
Memory speed (MT/s)	2400 MT/s
ECC memory	Non-ECC
Memory module type	SODIMM
Replaceable memory	Replaceable
Network ports	2x 10GbE + 2x 2.5GbE
USB ports	2x USB 3.2 Gen 1 + 2x USB 2.0
PCIe expansion	None
M.2 slots	2
Drive bay types	3.5-inch bays:; 3.5-inch SATA hard disk drives; 2.5-inch SATA solid state drives
Hot-swappable bays	Yes
CPU frequency (GHz)	2.2
Power draw, active (W)	30.878
Power draw, hibernation (W)	17.367
Power supply (W)	100
Noise level (dBA)	20.3
Dimensions H x W x D	1.7 x 16.9 x 11.5 in (43 x 430 x 292 mm)
Weight	10.8 lb (4.91 kg)
Largest certified configuration observed	128 TB (4 x Seagate ST32000NT000, largest drive on the vendor HCL today; not a hardware limit)
Estimated cost to fill every bay with a certified 8 TB drive	about $1,080 new (Seagate ST8000NM017B) / about $1,260 refurbished (Seagate ST8000NE001) / about $820 used (Western Digital WD80EFZX) -- one observed eBay unit price incl. shipping x bays; quantity availability unverified
Estimated cost to fill every bay with a certified 16 TB drive	about $2,100 new (Western Digital WUH721816ALE6L4) / about $1,700 refurbished (Seagate ST16000NM001G) / about $1,236 used (Seagate ST16000NM001G) -- one observed eBay unit price incl. shipping x bays; quantity availability unverified

• 1U short-depth design (292 mm)
• 2x M.2 NVMe slots for SSD caching
• 2x 2.5GbE, 2x 10GbE

View on Amazon Search eBay (used from $558.43, new from $778.99) Official product page + Compare

7 eBay listings checked Nov 9, 2026 · 6 new, 1 used

Documents

• Product User Guide (PDF)
• Datasheet (PDF)

Compatible Drives

354 drives certified on TS-435XeU's official manufacturer compatibility list, sourced directly from QNAP's own published Hardware Compatibility List. Each model links to that drive's own compatibility page.

Certified list last checked 2026-09-16.

Compatible Memory

11 memory modules listed by QNAP as compatible with TS-435XeU. Third-party modules may also work, but are not shown here unless QNAP itself lists them as compatible.

Certified list last checked 2026-09-09. Coverage varies by model. Rated module speed is not a guarantee of NAS operating speed; follow the NAS maximum capacity and installation rules.

Looking for cameras compatible with QNAP NAS units? See the full QNAP camera compatibility database.