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RamCity guarantees 100% that all modules below are compatible with the ASUS/ASmobile S Series Notebook S121

Part #. KVR533D2S4/2G • DDR2-533 / PC2-4200 • CL4 • 1.8V • 16-chip 128M x8 • more info

Buy new: $115.99 $90.99

Part #. CJZ • DDR2-533 / PC2-4200 • CL4 • 1.8V • 16-chip 128M x8 • more info

Buy new: $114.99 $89.99

Part #. KVR533D2S4/1G • DDR2-533 / PC2-4200 • CL4 • 1.8V • 16-chip 64M x8 • more info

Buy new: $83.99 $65.99

Part #. AGC • DDR2-533 / PC2-4200 • CL4 • 1.8V • 16-chip 64M x8 • more info

Buy new: $83.99 $65.99

We guarantee your memory upgrade will be 100% compatible, or return it within 1 Whole Year for a full refund.

Need some help installing your upgrade? See our guides and videos.

System Specifications

Standard Memory:

Maximum Memory:

Expansion:

Bus Architecture:

Upgrade Path: