Lian-Li PC-O5S Review

Final Thoughts

Overall the Lian-Li PC-O5s is a very nice case. The aluminum construction is typical Lian-Li quality, which is a good thing. The extensive options for mounting drives make the case very flexible in use as well. It is advertised as an open air wall mount case. I’m not sure how many of them will actually get mounted on a wall, but that doesn’t mean it doesn’t look great sitting on a desk.

There are a few things I really didn’t like about the case. The stand and the tempered glass panel being held in by the same thumb screws on the bottom is annoying, as it means you’ll want to set the case on its back to take the side off. Not the end of the world, but annoying if you just want to blow the dust out or make a quick tweak.

I really wish that they had included a PSU cable extension instead of having to run it through the hole in the I/O panel. It requires taking that panel off, fishing the cable through, and then putting the panel on. As if that’s not enough, you’ve also got to snake it all the way to the opposite corner to get to the PSU. By the time you’re done with that, you’ve got 1/3 of the power cable inside the case, so you’ll have to be pretty close to an outlet. You can only imagine how much worse this would be with the ATX PC-O7s version. Having an extension in place of the routing holes would be a much better approach.

That said, it was great that Lian-Li listened to community feedback when they started showing their prototypes. They weren’t always planning on having mesh, but I think the mesh is great addition to the aesthetic; in addition to the dust prevention the community was hoping for.

What I like:

  • Ample cable space behind motherboard
  • Plethora of drive mounting options
  • Aluminum Construction
  • Build quality and finish
  • Style and elegance
  • Ability to house custom loop

What I don’t like:

  • No PSU intake in motherboard tray
  • PSU screw access can be difficult
  • Power cable routing through case
  • Window and Stand sharing mounting screws
  • Needing to remove certain panels to access simple things
  • Power LED is ridiculously bright



The modability of this case is partially limited by the fact that one whole side is tempered glass. Not too many of us will have the necessary equipment to do much with that. However, the glass side panel is just a flat rectangular sheet with four (4) holes in it. It would be extremely easy to make a new acrylic side panel in your color choice, or some sort of combination of etching, masking, or painting as well. There’s not a whole lot of extra room for mounting a larger radiator in the top, but perhaps with some modding a large radiator could be put in place of the PSU and hard drive rack. Actually, that could be fun… hmmm.



I make no apologies, I really like this case. I love the style, the elegance, and the presence this chassis has. The fact that you can mount it vertical or in desktop form isn’t popular, but not unheard of. Being able to mount it on the wall might seem asinine, but it doesn’t hurt to have the option; besides, with the right build you just might want to show it off like that. There are a lot of options for mounting drives too. However, I do feel there was some oversight in the design as listed above; especially the power cable and the finicky nature of installing some components (having to remove so many panels to gain access). Combine that with the suggested retail price (at time of review) of $319 and I’m going to give the PC-O5s a 4-nanner rating, but still Mod Zoo approved. That’s not a “bad” rating mind you, it’s still a very nice case, but there’s definite room for improvement in my opinion.

About Mosquito

4 thoughts on “Lian-Li PC-O5S Review

  1. Nice review Mos. This case seems like a clear effort from Lian Li to offer something in the realm of InWin’s higher end concept cases. These cases looked amazing when we saw them at CES. Some people will balk at the price tag but this is a high caliber case that looks incredible. 90% of the people that walked by on the show floor stopped to look at them when we were at the booth.

  2. A great review as always Chris  :D
    As much as I love this case two things limit it in my eyes –
    1) It can only accommodate a 190mm GPU out of the box.
    2) It’s price tage in the UK – £280 ($417 US) erm sorry but no chance would I or many others pay that.

  3. Yeah, it’ll definitely take the right buyers to move these things. I do think it’s worth it, though. In terms of design, materials, workmanship, and aesthetic. It’s just got to be the right combinations of wants and financial resources lol

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