The MemoryMasters memory RAM module was specifically engineered to be compatible with the HP 220-r104nf All-in-One. Included in the package is a Genuine MemoryMasters Brand 4GB Single DDR3L PC3L-12800 2rx8 1.35v Non-ECC Memory Stick (204-pin SO-DIMM 1600MHz) upgrade. MemoryMasters is one of the most trusted names in Premium Memory. Backed by a Lifetime Warranty and 5 star customer support, MemoryMasters has you covered! Memory upgrades have never been easier. Designed specifically to help your computer run faster and smoother, an MemoryMasters memory upgrade is one of the fastest, most affordable, and easiest ways to improve your system's performance. MemoryMasters memory empowers your computer to achieve faster application loading times, faster system responsiveness, and increased ability to multitask and handle data-intensive programs. MemoryMasters modules are rigorously tested to ensure that your memory meets our stringent compatibility and performance standards. Every MemoryMasters ram module is tested for complete functionality before it leaves our doors. Give your computer the best, trust MemoryMasters! Additional Details ------------------------------ Package quantity: 1