Used – Fully Tested and Working This genuine Hynix 8GB DDR4 SO-DIMM module has been carefully tested and verified in excellent working condition. A perfect upgrade to boost your laptop’s performance and multitasking capabilities. -Brand: SK Hynix -Model: HMA81GS6JJR8N-VK -Capacity: 8GB -Type: DDR4 SO-DIMM -Speed: 2666 MHz (PC4-21300) -Rank: 1Rx8 -Form Factor: Laptop Memory (SO-DIMM) -ECC: Non-ECC -Voltage: 1.2V -Pin Count: 260-pin Compatible with most laptops and notebooks supporting DDR4 2666 MHz SO-DIMM memory — including Dell, HP, Lenovo, Acer, ASUS, and more. CHECK LAPTOP COMPATIBILITY PRIOR TO PURCHASE