4GB Asus X54H-SO165V (90N7BZ1A8N1313VL55D) RAM Upgrade
ストレッチドビー OFFTEK 16GB Replacement Memory RAM Upgrade for Asus Maximus X Formula ROG (DDR4-21300 (PC4-2666) - Non-ECC) Motherboard Memory | hasudining.com
Best Buy: Asus Laptop / Intel® Pentium® Processor / 15.6" Display / 4GB Memory Black X54H-BD3MA
Asus X54H-SX227D Laptop (2nd Gen Ci3/ 2GB/ 320GB/ DOS) Rs. Price in India - Buy Asus X54H-SX227D Laptop (2nd Gen Ci3/ 2GB/ 320GB/ DOS) Black Online - ASUS : Flipkart.com
Asus X54C HDD, RAM Memory Replacement - iFixit Repair Guide
Asus X54C HDD, RAM Memory Replacement - iFixit Repair Guide