Yes, you can reuse an old PC case, PSU, and fan when building a new PC.
Yes, you can reuse an old PC case, PSU, and fan when building a new PC.
Some contemporary motherboards include a unique USB connector (labeled 'USB3.1C Gen2 A-key Header') visible in the image below. Upon closer inspection, the more typical (larger) USB3.0 port is located to the left of the smaller "USB-C" header (highlighted in red).
https://linkup.one/20-pin-a-key-male-to-...pter-40cm/
I prefer the (relatively costly) Graugear front panel 3.5in adapter, though more affordable options are available on Amazon, eBay, and similar platforms. Simply connect the two USB cables to the corresponding ports on the motherboard (assuming a compatible one has been purchased).
https://www.amazon.de/GRAUGEAR-Front-Pan...B09QXF1TDS
A quick review of your photos suggests the older PSU is of standard dimensions, so you should be able to install a modern ATX PSU rated up to 750W. If you require a more robust PSU at 850W or above, keep in mind these units are typically longer and may not fit well. For verification, measure your current PSU (length, width, height) and compare it with the new unit’s specifications.
As others have mentioned, consider replacing the PSU.
Your existing case appears suitable for an mATX motherboard. Remove the old board and inspect the chassis for drilled holes (such as M3, 6-32, or 4-40) that match the mATX mounting layout. Some boards may have fewer mounting points than others.
https://voltcave.com/matx-in-atx/
Generally, you can remove any hexagonal pillars in incorrect positions on the chassis and install them into the appropriate slots for an mATX board.
Avoid leaving any metal pillars where there are no corresponding holes on the new board. Doing so risks creating a short circuit and could damage the new motherboard.
I often assemble PCs in older cases. My most recent 7950X is installed in a Lian Li PC-S80 from 2006, along with several other vintage cases.
If everything fits—new PSU and new motherboard—you likely won’t need to purchase a replacement case.
I am studying full stack software development with Angular and Java Spring. The operating system is Linux exclusively. I have two monitors, each 4K (3840 x 2160) at 60Hz simultaneously. USB-C is not required. Occasionally I back up photos from my phone to the computer disk, which can be stored in the back. A possible USB-C solution is:
https://www.amazon.ca/LINKUP-Motherboard...C8ZVF?th=1
Cost: $34.96
Is there a more affordable option?
If the motherboard mounting holes don’t align, what alternatives exist?
A stick-on motherboard mount could work, similar to this one:
https://www.amazon.ca/PATIKIL-Adhes...7c...22d05ecca4&pd_rd_i=B0C7QNGHMT&th=1
Support Height options: 4.8mm/0.19inch, 6.3mm/0.25inch (Total: 15mm/0.59inch), etc.
For the 400W power supply:
https://www.amazon.ca/EVGA-Warranty-Powe...r=8-3&th=1
In a typical setup, the openings should align properly.
Yes.
I would avoid that PSU in a contemporary configuration. The red voltage selector button on the back panel suggests it likely lacks active power factor correction and is an outdated model.
Which height for the stick on motherboard mount is suitable?
Recommended support heights include 4.8mm, 6.3mm, and 15.8mm with corresponding total heights.
For a power supply under 400W, consider alternatives as needed.
The only way to be 100% sure is to take out the motherboard and check the height of the existing stand offs. You might be surprised to discover at least six stand offs beneath the motherboard. It’s not worth spending on plastic mounts if you already have what you need. If you really wish to purchase them, opt for the 6.3mm version.
Currently, standard ATX PSUs usually begin around 500W, which can make it hard to find one with a rating of 400W or less. Older PCs with low-power graphics didn’t need much power. Today’s high-end graphics cards and powerful CPUs often demand more energy.
It doesn’t matter whether your new PC draws 50W or 250W—you can still accommodate a 500W+ PSU. The device only consumes the amount it needs. Installing a 650W PSU in a 50W system won’t be efficient, though specialist low-power (under 400W) units may cost more than regular slightly higher power models (500W+).
I generally purchase Corsair PSUs from Amazon because they’re readily available locally. Seasonic is another reliable brand.
I recently replaced an old, unbranded PSU in a 12-year-old build with a cheap CX550. It was surprisingly light, offered few SATA power connectors, and had a short warranty. Not suitable for a primary system. Corsair CX and CV are budget-friendly options for less critical builds where price matters most.
https://www.amazon.ca/CORSAIR-Bronze-Mod...136&sr=8-1
I’m more satisfied with the RM650 for basic systems. It has a heavier build, superior design, and ample power cables for SATA drives, GPUs, ATX12V, etc. The RM series falls in the mid-range (in my view) and offers a longer warranty compared to CX/CV.
https://www.amazon.ca/CORSAIR-RM650-Modu...178&sr=8-1
OS isn't the main concern, but handling two 4K monitors is quite demanding. Many budget motherboards offer only one video output, typically HDMI. Even those with dual outputs require checking with the manufacturer or supplier to ensure they can support 2x 4K at 60 Hz simultaneously, despite the processor's capability. Cheaper boards might have unusual behavior regarding port support. If you choose a board with dual video outputs, it’s likely USB-C will already be present on the back, such as in some value models (note: this example is from a UK site). This addresses your USB-C concern and helps save costs. Please verify with the manufacturer that the board can drive two 4K monitors at 60 Hz together. You might still face challenges with Linux, but that’s something to consider later.