Asus K40AB - RAM Upgrade Guide
The Asus K40AB laptop has two memory slots available for RAM upgrades. It supports a maximum memory capacity of 4GB. The type of memory used is DDR2 SDRAM, and it comes in a SODIMM form factor, which is a compact design suitable for laptops. For optimal performance, the recommended RAM clock speed is 800MHz, often labeled as PC2-6400.
Asus K40AB Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus K40AB |
| Total memory slots | 2 |
| Maximum RAM | 4GB |
| Memory type | DDR2 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 800MHz (PC2-6400) |
| Voltage | 1.8V |
| Number of pins | 200-pin |
FAQ about Asus K40AB RAM
How much RAM can I put in my K40AB laptop?
You can install up to 4GB total. The laptop has 2 memory slots, so that's typically 2x2GB sticks.
What type of memory does the K40AB use?
It uses DDR2 SODIMM modules - those are the smaller laptop memory sticks, not the full-size desktop ones. Make sure you get DDR2, not DDR3 or DDR4.
What speed RAM should I buy for the K40AB?
Get 800MHz DDR2 modules (also labeled as PC2-6400). The system might work with other speeds but 800MHz is what's recommended.
Can I mix different RAM sizes in the two slots?
Yes, you can mix sizes like 1GB + 2GB, but matching pairs (2GB + 2GB) usually perform better since they can run in dual-channel mode.
Do I need to remove the old RAM when upgrading?
Depends what's already installed. If you have 2x1GB and want 4GB total, you'll need to remove both and install 2x2GB. Check what's currently in there first.
Is 4GB really the maximum or can I try installing more?
4GB is the hard limit for this model. Even if you install larger modules, the system will only recognize 4GB total. Don't waste money trying to exceed it.