Introduction: Toughbook CF-U1 Readily Available SSD Mod UPDATED!

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So I own a pair of Panasonic Toughbook U1s. One is the older MK1 spec, the other a MK2 Ultra with every option.

The issue was, they are slow, horribly slow. Not so much the specs though. MK2 for example is a 1.6GHZ Intel Atom with 2GB RAM and a 64GB SSD. The SSD was the issue.

Benchmarks are attached. One is the 64GB, the other is the faster 16GB SSD from the MK1 in the MK2.

I knew there must be some way to improve on this. Information on these little computers is very limited and parts are even more so. It has a weird tiny ZIF connector for the SSD, and no one had anything published on the main board side so I went digging.

Step 1: Research

I took the MK1 apart and found the connector on the board.

After looking at it, comparing it, then testing it with an Ipod to CF zif kit, it worked!

That done, I set out ordering parts.

Here's that list: [I got it off EBAY, these are Amazon.com links]

M-SATA to ZIF Adapter

http://www.amazon.com/SMAKN%C2%AE-mSATA-PCI-E-40pi...

Samsung M-SATA SSD

http://www.amazon.com/Samsung-850-mSATA-2-Inch-MZ-...

3M Mounting tape

http://www.amazon.com/Scotch-414-DC-Extreme-Mounti...

That's it, time to mod. Some kits come with a cable, you will need 50mm of cable to do this mod.

Step 2: Dig In!

Start with the hard drive. Two screws and it will slide out. Remove any SD card in the side and then take out the batteries.

There's two silver screws under the fingerprint reader/cover. It lifts then slides off towards the top.

After that's gone there's 8 screws holding the back on, see the pictures.

Depending on your model you may have a WWAN board. This needs to come out. Simply remove the 3 screws and carefully unplug the cable to take it out of the way.

Unplug the HD cable, I gutted out my HD holder and just tucked the cable back under the board in the PC.

Before we get too far I have found adding a 4UF cap to the MSATA adapter board really helps stability. See the picture, I used a non-polarized cap here.

Once space is made you can install the Msata card and cable to the computer. Simply attach the zif cables in the right directions very carefully, these connectors are kinda delicate.

Once that is done, rotate the assembly and attach with the mounting tape, that's it, job done. The cable should fold on it's own to make the turn, if it's too short it wont make it. In mine the new board touches the bottom mounting post for the back cover but clears fine.

Step 3: Testing and Installing Windows

That all done, case closed and device installed the BIOS should see it.

As you can see from the benchmark it's a huge improvement. Overall it just feels like a better computer.

I hope this helps someone!

Now install Windows and enjoy the speed! Mine is much more usable, it feels like a more modern PC now. I use it for GPS mostly.

Step 4: A Follow Up

OK after messing with this on and off for years I got some good information and it working good too.

1) the temperature sensor can be defeated with a 4.7k ohm resistor to ground on the upper most pin when look at the 40 pin ZIP on the motherboard. I made a small circuit board that provides this by connecting 2 40mm 40p ZIF cables.

2) A lot of issues are power draw. The machine provides very little power to the SSD. I found additional 3.3v on the connector for the fingerprint scanner. This is the zoomed in picture above. Soldering a small wire here to the + side of the capacitor on the SSD adapter board provide power and fixes many issues such as failing to install windows.

Take a close look. This is not a simple mod in the end.

Step 5: Modify the MSATA to Keep It From Reading Low Temperture

OK so these have a thermistor on them. At least stock they do. I finally revisited this and found a termistor on the 1st pin that goes to ground. This drops resistance as it heats up so I put a 5k resistor across it and now it boots every time, no issues!

I used a 40 pin ZIF connection and two cables. I added a 4.7K Ohm resistor to the line closest the top of the toghbook. This is where the thermistor is in stock setup. Then I ran a wire from ground to the other end of the resistor giving it a good 40c or so signal so it never hangs up on warming up the hard drive.

I have designed a 3D printable cover for the former drive slot if you want to remove it completely. Find it here:

https://www.thingiverse.com/thing:4766485


Here's a recent video of me making the mod inside a MK2: https://www.youtube.com/watch?v=9syGVhpcqGY


Here's a newer video showing some details on the latest adjustments: https://youtu.be/KrVuuMg87qY