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Green 4GB DDR3L SO-DIMM stick with black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM5126412800SOSRL 4GB DDR3L 1600 Synology DS1517+ DS1817+ memory upgrade

SKU CH-VHJ1-VPA6Y

4 GB DDR3L 1600 SO-DIMM upgrade for Synology DiskStation DS1517+ and DS1817+ NAS units

  • Total capacity4 GB
  • Rated speedDDR3L 1600 (PC3L 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.35 V
  • 4GB capacity expands NAS multitasking headroom
  • DDR3L 1600MHz speed matches DS1517+ and DS1817+ specs
  • 35V low-voltage operation reduces power draw
  • CL11 11-11-11 timings deliver responsive memory access
  • 204-pin SO-DIMM form factor fits Synology DiskStation slots

4 GB DDR3L 1600 SO-DIMM for Synology NAS

This 4 GB module upgrades Synology DiskStation DS1517+ and DS1817+ systems. It runs at 1600 MHz with CL11 timing and 1.35 V DDR3L voltage. The unbuffered, non-ECC design fits the 204-pin SODIMM slots in these NAS units.

Ideal for expanding DS1517+ or DS1817+ memory.

The stick adds capacity to the two-slot platforms that max out at 16 GB total. Builders who need error-correcting code, registered modules, or higher densities should look elsewhere. It also suits only the listed Synology models.

DDR3L 1.35 V voltage matches NAS requirement

The module operates at the 1.35 V DDR3L standard specified for the DS1517+ and DS1817+. A different voltage would prevent boot or cause instability, so this spec decides compatibility.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $4.50 per GB
Cheaper than about 81% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5126412800SOSRL
Total capacity4 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3L 1600 (PC3L 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.35 V
Compatibility
Compatible systemsSynology DiskStation DS1517+, DiskStation DS1817+
In the box
Included items1Memory Ram Stick

Questions about this item

Will the 204-pin DDR3L SO-DIMM fit the memory slots in my Synology DS1517+?

Yes, the 204-pin SO-DIMM form factor matches the two DDR3L slots in the DS1517+ and DS1817+ for a direct fit.

What is the correct way to seat the module so the system recognises the full 4GB capacity?

Insert the stick at a 30-degree angle until the gold contacts disappear, then press down firmly until both side clips click into the notches.

How can I tell if the stick needs replacing after extended use in a DS1817+?

Run the built-in memory test in DSM; persistent errors or failure to boot with the module installed indicate it should be swapped out.

More in Model-Specific Memory Upgrades

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