Adata Premier 4GB (4GBx1) DDR4 2666MHz SO-DIMM Laptop Ram

The Adata Premier 4GB DDR4 2666MHz SO-DIMM (model AD4S26664G19-SGN) is a single-module notebook memory upgrade designed for laptops and compact systems that accept the standard 260-pin SO-DIMM form factor. Operating at DDR4-2666, it delivers a meaningful step up in memory bandwidth compared to DDR3-based predecessors, helping to reduce load times in everyday productivity tasks, web browsing, and light creative workflows. One of the defining characteristics of this module is its low operating voltage. Running at the DDR4 standard 1.2 V — rather than the 1.5 V typical of DDR3 — the Premier series draws less power during both active and idle states, which can contribute to extended battery life in portable systems. This makes it a practical choice for users who need a reliable, energy-conscious memory upgrade without moving to a higher-tier enthusiast module. The AD4S26664G19-SGN complies with JEDEC standards, the internationally recognised benchmark for memory interoperability and electrical specification. It is also RoHS compliant, meaning it meets the European Union's Restriction of Hazardous Substances directive — an important consideration for users with environmental and regulatory requirements. The module is noted to support Intel Skylake and Coffee Lake platform laptops. Adata backs this module with a limited lifetime warranty, covering manufacturing defects and ensuring long-term support for the product. For users looking to complement this RAM upgrade, pairing it with an Adata NVMe SSD — such as the Adata Legend or Ultimate SU650 series — can further improve overall system responsiveness. Verified Specifications: - Model Number: AD4S26664G19-SGN - Series: Premier - Memory Type: DDR4 - Form Factor: SO-DIMM (260-pin) - Capacity: 4 GB (1 x 4 GB single module) - Speed: 2666 MHz - Operating Voltage: 1.2 V (DDR4 STD) - Operating Temperature: 0°C to 85°C - Standards Compliance: JEDEC, RoHS - GTIN: 4711085931474 - Warranty: Limited Lifetime