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Mobility

Cracking Open the ASUS Eee 901 20G ultra-portable

By Mark W. Kaelin July 25, 2008, 4:56 AM PDT

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Cracking Open the ASUS Eee 901 20G ultra-portable

Ultra-portable

Ultra-portable

The ASUS Eee 901 20G is one of the new ultra-portable PC-like devices hitting the market. It is trying to fill a niche where consumers want power and long-battery life in an ultra-small and extremely portable package. We just had to crack open our ASUS 901 take a look inside and check out its design and engineering.

Cracking Open the ASUS Eee 901 20G ultra-portable

ASUS is devious

ASUS is devious

So it is going to be like that is it. The yellow circle marks the first hidden screw. I guess it is going to be obvious we opened our ASUS 901 up. There goes the warranty.

Cracking Open the ASUS Eee 901 20G ultra-portable

Getting in

Getting in

The ASUS case is held together by six Phillips Head screws — at least that is how it appears.

Cracking Open the ASUS Eee 901 20G ultra-portable

Long battery life explained

Long battery life explained

The ASUS 901 has a double cell Lithium-Ion battery pack. That helps to explain the device’s longer battery life.

Cracking Open the ASUS Eee 901 20G ultra-portable

Easy access to RAM and the solid state drive

Easy access to RAM and the solid state drive

Two screws later (one partially hidden under a piece of tape) and the back door pops off to reveal the RAM board and the 20GB solid state hard drive.

Cracking Open the ASUS Eee 901 20G ultra-portable

Block out the emissions

Block out the emissions

The back door is covered in aluminum foil — I am not sure why. Do you have a guess?

Cracking Open the ASUS Eee 901 20G ultra-portable

Standard connections

Standard connections

The RAM and solid state drive are connection to the ASUS 901 via seemingly standard connections. That should mean that the device is fairly easy to upgrade – assuming the internal components can handle increased capacities.

Cracking Open the ASUS Eee 901 20G ultra-portable

Clips open RAM removed

Clips open RAM removed

The RAM board appears to be fairly standard notebook RAM. I simply opened the clips that held the board in place and removed it.

Cracking Open the ASUS Eee 901 20G ultra-portable

Elpida made the RAM

Elpida made the RAM

Elpida Memory, Inc. is a large Japanese company specializing in the manufacture of DRAM memory chips.

Cracking Open the ASUS Eee 901 20G ultra-portable

Now on to the solid state drive

Now on to the solid state drive

The solid state drive is next — it looks to be a simple removal.

Cracking Open the ASUS Eee 901 20G ultra-portable

Need a screwdriver

Need a screwdriver

To remove the solid-state drive we need to remove the two highlight screws.

Cracking Open the ASUS Eee 901 20G ultra-portable

Samsung solid state

Samsung solid state

Samsung made the 20GB solid state drive.

Cracking Open the ASUS Eee 901 20G ultra-portable

More Samsung chips

More Samsung chips

The flip side of the solid state drive contains more Samsung made chips. This is probably one of the more expensive parts in our ASUS 901.

Cracking Open the ASUS Eee 901 20G ultra-portable

The ASUS Eee case is stubborn

The ASUS Eee case is stubborn

At this point I have removed all of the visible screws, but the case will not separate. There must be some hidden screws somewhere – but where?

Cracking Open the ASUS Eee 901 20G ultra-portable

Under the 901 keyboard

Under the 901 keyboard

That’s right – there are eight screws under the keyboard. And one has a warning piece of tape over it – I guess the warranty is really out the window now.

Cracking Open the ASUS Eee 901 20G ultra-portable

ASUS keyboard

ASUS keyboard

The ASUS 901 keyboard is not the best keyboard I have ever seen. It is very thin and flimsy. I’d better not bang on it like I do most keyboards.

Cracking Open the ASUS Eee 901 20G ultra-portable

The 901 motherboard

The 901 motherboard

Our first clear look at the ASUS 901 motherboard. There are lots of chips on this motherboard, but the layout is surprisingly roomy.

Cracking Open the ASUS Eee 901 20G ultra-portable

The Intel 945 Express chipset

The Intel 945 Express chipset

The star of the motherboard of course is the Intel 945 Express chipset for mobile computing. The three main components, the Atom CPU, the Graphics chip, and the controller are highlighted.

Cracking Open the ASUS Eee 901 20G ultra-portable

The ASUS brain trust

The ASUS brain trust

The three main chips dominate the motherboard. The yellow highlights where the thermal paper stuck to the controller chip.

Cracking Open the ASUS Eee 901 20G ultra-portable

Atom CPU

Atom CPU

The Atom CPU is small and designed to be used in small mobile devices.

Cracking Open the ASUS Eee 901 20G ultra-portable

Atom CPU - new angle

Atom CPU - new angle

The Atom CPU from Intel is one of many CPUs produced by that large conglomerate operation. The data sheet can fill you in on where the Atom falls into the Intel product line.

Cracking Open the ASUS Eee 901 20G ultra-portable

Graphics chip

Graphics chip

Intel also has a long line of inexpensive, low-energy consuming, graphics chips in their product line. This one was spit-cleaned by Bill Detwiler as he passed by the Cracking Open lab table. I quickly moved on to the next chip.

Cracking Open the ASUS Eee 901 20G ultra-portable

ASUS thermal tape

ASUS thermal tape

The thermal tape used to help transfer heat to the metal supporting the top portion of the case stuck to the controller chip. Bill was not satisfied with that and insisted we remove it.

Cracking Open the ASUS Eee 901 20G ultra-portable

Thermal tape moved controller revealed.

Thermal tape moved controller revealed.

The tape was carefully removed to reveal an Intel stamp on our controller chip (after another spit-cleaning by Bill — see what I have to contend with)

This chips handles the I/O for the ASUS 901.

Cracking Open the ASUS Eee 901 20G ultra-portable

Where the thermal tape should go

Where the thermal tape should go

This is where the thermal tape should be.

Cracking Open the ASUS Eee 901 20G ultra-portable

Back where it should be

Back where it should be

The thermal paste is back in its spot.

Cracking Open the ASUS Eee 901 20G ultra-portable

Not perfect

Not perfect

The tape is not perfect, but it should be good enough.

Cracking Open the ASUS Eee 901 20G ultra-portable

LCD connection

LCD connection

Just above the Intel controller chip is the LCD connection. The ASUS 901 has a very bright and vibrant LCD screen.

Cracking Open the ASUS Eee 901 20G ultra-portable

Camera and microphone - check

Camera and microphone - check

On the other end of the motherboard we can see the connections for the microphone and for the camera which are both mounted inside the lid with the LCD.

The connection under the tape that I didn’t see until I started to remove the motherboard goes to the fan, which we will see later.

Cracking Open the ASUS Eee 901 20G ultra-portable

Bottom of the motherboard

Bottom of the motherboard

The other side of the motherboard contains several important parts for our ASUS 901 Eee.

Cracking Open the ASUS Eee 901 20G ultra-portable

Battery and memory

Battery and memory

In this image you can see where that battery connection went and you can see more memory chips. These chips must store persistent information like operating system preferences.

Cracking Open the ASUS Eee 901 20G ultra-portable

Wireless connections

Wireless connections

The silver rectangle in the image houses our wireless chips. Besides the controlling chip provided by ENE Technologies, Inc. we also have a chip made by Phison. The yellow highlights mark the poles for the antennae.

Cracking Open the ASUS Eee 901 20G ultra-portable

Sound chips

Sound chips

In this corner we find several chips involved in the production of sound for the ASUS Eee. The one with the highlight should be familiar to us — it is a High-Definition sound chip from RealTek.

Cracking Open the ASUS Eee 901 20G ultra-portable

A multimedia controller

A multimedia controller

The yellow highlight marks the speaker connection and the red highlight marks a multimedia controller chip. I would like to know the manufacturer, but I don’t see any logos or names. Can anyone help us with that?

Cracking Open the ASUS Eee 901 20G ultra-portable

The bottom of the Eee case

The bottom of the Eee case

This is an overview of the underside of the case. Note the various connecting wires and the speakers.

Cracking Open the ASUS Eee 901 20G ultra-portable

Cooling the ASUS Eee 901

Cooling the ASUS Eee 901

There is indeed a fan to help dissipate heat from the ASUS Eee. However, as the arrows show, the fan pulls air across and away from the solid state hard drive and the RAM board. The chips apparently get most of their heat dissipated by the casing which constitutes a large heat sink.

Cracking Open the ASUS Eee 901 20G ultra-portable

The ASUS Eee 901 20G Cracked Open

The ASUS Eee 901 20G Cracked Open

The ASUS Eee 901 20G is an interesting Cracking Open specimen. As a device, you can admire its construction and engineering. As a PC, you might not particularly like the limitations imposed by its lack of capacity, but you can still admire its design.

And because everyone always asks: I put it back together and it still works just fine. In fact, I’m going to put some different operating systems on it just to see what that looks like.

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By Mark W. Kaelin
Mark W. Kaelin has been writing and editing stories about the information technology industry, gadgets, finance, accounting, and tech-life for more than 25 years. Most recently, he has been a regular contributor to BreakingModern.com, aNewDomain.net,
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