AD03 Unofficial Service Guide
I assume no responsibility for the damage caused by using this guide. Some steps may void your warranty!Opening The Case
Unscrew the two screws in the back, slide the top shell open.
2.5' SATA SSD Sled
After opening the case, you'll see the 2.5' SATA SSD sled. The installation of a 2.5' SATA SSD is completly tool-less, just align the connector and put it in.
2.5' SATA SSD Sled Removal
Unscrew the three screws holding down the sled, then lift it up.
Note: These screws are shorter than the case screws. Do not mix them up.
Case Molding Removal
Unscrew the screws located in these four screw holes. These screw holes are a bit deep, so the use of an adequate length screwdriver is needed.
After unscrewing the four screws, you should feel the case molding has loosened a bit. Next, use a thin and rigid tool to pry along the sides to loosen up the plastic clips that holds down the molding. After the molding pops loose, be careful with it, since a Wifi antenna is attached to the under side of the molding.
Motherboard Components - Front On the motherboard, you will see two parts that are easily accessible. First of all is the RAM. You can replace the stock RAM with 3200MT/32GB model. Then there's the SSD, which is SATA SSD only. Personally I do not feel the need to replace this SSD because it is just a normal SATA drive, read/write speed will top out around 500 MB/s no matter how good of an SSD it is. If you have the need to expand storage, I recommend adding a 2.5' SATA SSD since the price is more reasonable than M.2 SATA SSD.
However, there's one thing I do want to change, that's the WiFi module that seats under the SSD. The factory module is Realtek, and I do find it to be very underwhelming. You have couple of options:
If you have a WiFi 6E Router/AP: Intel AX210, about $20 on Amazon
If you have Wifi 6: Intel AX201, about $20 on Amazon
If you have WiFi 5 (anything that's not labeled WiFi 6): Intel 8265, about $15 on Amazon Since the price difference is so small, I'd suggest going for AX210 once and for all. But before you do replace the WiFi module, make sure that you have downloaded the driver needed from Intel first. Although Windows 11 should have the driver for it, but to be safe, download it before you put in the new WiFi module.
Motherboard Components - Back
If you continue on the disassembly, disconnect the WiFi antennas first, that means you'll have to take out the M.2 SSD to get to it. Then, unscrew the four silver metal screws that holds down the motherboard, then lift it up at an angle to pull it out. Flip the motherboard over, you'll see the heatsink. Unscrew the screws holding down the heatsink in a criss-cross pattern, do not loosen one screw all the way as it will introduce uneven pressure on the CPU die. This is how you can replace the thermal paste with a better one. I repasted it with Arctic MX-6. Put the heatsink back and screw it on using criss-cross pattern as well.