4GB for ASRock Beebox J4205 - memory extensionThis 4GB main memory was certified for the ASRock Beebox J4205 by us and is compatible to 100 % .RAM memory information-------------------------------------size of RAM memory : 4GBmemory technology: DDR3memory pulsing: 1600MHz (PC3L-12800S)RAM memory type: SO DIMMnumber pin: 204 Pin DIMMvoltage: 1,35 voltarticle numbers : SP243640main memory warranty: 5 years*device - specification-------------------------------------maximum RAM memory: 16GBplug-in position for RAM memory: 2*5 years warranty-------------------------------------PHS-electronic GmbH - speicher.de - uses premium brand chips from Samsung, Hynix, Transcend and Micron for its high-quality PHS-memory memory modules. Should the memory module be defective or fail within 5 years of purchase if used properly, you will receive an adequate RAM module for free. If no suitable storage module is available, we will refund the purchase price.This warranty does not limit the purchaser's statutory warranty rights.quality promise-------------------------------------The offered memory module meets both the quality and the system requirements of the product. You always receive a qualified and tested brand memory, which is compatible to 100 %. For that reason the memory module can also be used together with the already existent RAM memories installed by the producer.