High-performance 16GB DDR3 Desktop Memory Quad Kit consisting of four (4) matching 4GB modules, part number RMR5040ED58E9W-1600. This premium, fully benched original Ramaxel component array is engineered for seamless system upgrades, multi-channel quad-channel expansion, and maximum performance tower configuration stability.

Technical Specifications:
- Brand: Ramaxel Technology (Lenovo Certified OEM Hardware)
- Part Number: RMR5040ED58E9W-1600
- Configuration: 16GB Quad Kit (4x 4GB Modules)
- Memory Type: DDR3 SDRAM
- Speed Rating: PC3-12800 / PC3-12800U (DDR3-1600 Native Baseline)
- Configuration Layout: Dual Rank x8 (2Rx8 Layout / 16 Chips Total per module)
- Timings: CL11 JEDEC Standard Profile (11-11-11-28 Parameters)
- Operating Voltage: 1.50V Standard Power Rail
- Form Factor: 240-Pin Desktop DIMM
- ECC Support: Non-ECC Unbuffered

Multi-Channel Performance Features:
- Symmetrical 2Rx8 Hardware Profile Across All 4 Slots
- Quad-Bank Matching Benchmark Stability
- Genuine Lenovo OEM Factory Screening and Reliability

Compatibility Note:
- Desktop Hardware Only: Standard 240-pin full-size desktop DIMMs. Please cross-reference your specific motherboard and processor configuration parameters before purchasing. Note: This is a standard 1.50V unbuffered desktop kit designed for quad-channel operations inside mid-to-late generation DDR3 towers, legacy office platforms, or custom computing rigs running native 1600MHz speed rails. They require a motherboard chipset that explicitly supports 4GB dual-rank modules per slot. They are physically and electrically incompatible with newer 288-pin DDR4/DDR5 slots or compact laptop SO-DIMM tracks.