QNAP TS-1635AX

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Status: Legacy / discontinued

Bays	12
CPU	Marvell ARMADA 8040 ARMv8 Cortex-A72
Cores / Threads	4 / -
RAM	4 GB or 8 GB installed (varies by SKU)
Product category	-
Badge	-
Hardware support status	Discontinued
OS/app support	Full
Technical support end	Active
Recommended replacement	-
RAM (max)	16 GB
Memory slots	1
Memory generation	DDR4
ECC memory	Non-ECC
Memory module type	UDIMM
Replaceable memory	Replaceable
Network ports	2x Gigabit Ethernet Port (RJ45) + 2x 10GbE
USB ports	3x USB 3.2 Gen 1
PCIe expansion	2; Slot 1: PCIe Gen 3 x2; Slot 2: PCIe Gen 3 x1
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; ; 2.5-inch bays:; 2.5-inch SATA solid state drives
Hot-swappable bays	yes
CPU frequency (GHz)	1.6
Power draw, active (W)	76.69
Power draw, hibernation (W)	39.74
Power supply (W)	250
Dimensions H x W x D (mm)	304 x 370 x 320
Weight (kg)	12.06
Largest certified configuration observed	264 TB (12 x Western Digital WD221KFGX-68B9KN0, largest drive on the vendor HCL today; not a hardware limit)
Estimated cost to fill every bay with a certified 8 TB drive	about $3,600 new (Seagate ST8000VN004) / about $2,640 refurbished (Toshiba MD06ACA800V) / about $659 used (Seagate ST8000NM0055) -- 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 $5,988 new (Seagate ST16000NM000J) / about $4,116 used (Seagate ST16000NM001G) -- one observed eBay unit price incl. shipping x bays; quantity availability unverified

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1 eBay listings checked Aug 8, 2026 · 0 new, 1 used (too few used listings to show a reliable used price)

Documents

• Product User Guide (PDF)

Compatible Drives

539 drives certified on TS-1635AX'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

3 memory modules listed by QNAP as compatible with TS-1635AX. 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.