This listing is for one (1) stick of Samsung 4GB DDR4 SODIMM laptop RAM. This module operates at 2133MHz with a PC4-17000S rating. This RAM module is ideal for upgrading or replacing memory in compatible laptops, improving multitasking capabilities and overall system responsiveness, or to match an existing 4GB module for a dual-channel setup. It is Samsung branded, a reputable manufacturer known for quality and reliability. Key Features: Capacity: 4GB (single module) Type: DDR4 SODIMM Speed: 2133MHz Rating: PC4-17000S Part Number: M471A5143EB0-CPB Compatibility: Please check your laptop's specifications to ensure compatibility with DDR4 SODIMM 2133MHz RAM. Condition: Excellent used condition, fully tested and working. Removed from a working system. What's Included: 1 x Samsung 4GB DDR4 2133MHz SODIMM RAM Module Shipping: Fast and secure shipping within the UK. Dispatched within 1 working day. Returns: 30-day returns accepted if the item is not as described or faulty. Buyer pays return shipping.