Rosewill 4U Server Chassis Case|Supports up to 4 GPUs|8 Hot-Swap 3.5"/2.5" SATA/SAS up to 12Gbps|E-ATX Compatible|3x 12038 Hot-Swap Fans,2 Rear 8038 Fans|USB 3.2 Type-C|With Rail Kit-RSV-AI01

Pros:-Very sturdy steel construction-Few rough or sharp edges-Lots of space for HDD/SSDs-Lots of fan slots-Lots of space to work with inside the case-Front panel door has a built-in air filter-Lots of included standoffs, screws, and 3.5" mounting rails (for HDD/SSD)Cons:-Included fans are pretty low quality-No included rails (not surprising at this price point)-Front panel lock is almost useless (as most are)I purchased an RSV-L4500U for a virtual desktop/gaming server. The case fit the ATX motherboard easy enough, with enough room for a Noctua NH-D9DX i4 3U cooler. The support bar with the fans is easily removed (more on this later). The middle support bar had to be removed in my build as the RTX 2070S cards needed the room; however, removing the bar didn't seem to have a significant impact to case stability. So long as either the middle support bar or the fan support bar is in place, I wouldn't be worried about overall stability.Lets talk about the elephant in the room: the included case fans. They are simply "OK". If your build doesn't require lots of cooling, or you can't afford to replace them, they are fine to leave in. However, I would highly recommend replacing all of them with similar-sized PWM fans for a couple of reasons: 1. PWM gives you control of fan speed and 2. While Molex connectors are generally safe, daisy-chaining several fans together is not. The included fans aren't really loud and move an OK amount of air. They seem to be pretty cheaply made, so I wouldn't expect them to last years. Replacing the fans is easy enough; the fan support bar comes out for easy replacement, and the drive cages (once removed) allow easy access for replacement.Since the motherboard I was using was desktop-grade, it only had one PWM connector for case fans. I purchased a SATA-powered fan controller which sticks to the inside of the case to connect all of the fans to (my controller included a PWM connection to the motherboard for fan speed control). I ended up needing a few extenders to connect all of the fans, which is expected considering the size of the case.The drive cages in the front of the case were a tad difficult to remove (pressing the tabs while pushing outwards is a bit awkward), but not a huge deal IMHO. Attaching the rails to a pair of 3.5" HDDs and a pair of 3.5" mounting brackets (for 2.5" SSDs) was easy and allowed them to slide easily into the drive cage. Be sure to pick up some bundled SATA/SAS cables for the drives that are at least 1 meter long.Overall, this is a great case for the value. I would deduct one star for the "meh" case fans and the lack of included rails, but the lower price point of the case earns it a star.

I love this 9B case, but it has a few issues. The first is the case only has room for one front 120mm fan. This is fine if you have 5 drives since that air intake is blowing directly on the drives. But once you add two more for max capacity you can see the 2 drives will run much hotter, almost 10c difference fwiw. Since the front panel USB is in the center this cabling gets in the way of the right most drive and you can’t mount the HHD cage.HHD cage says it mounts 3.5” but it’s a bit of a lie. Yes it mounts, but you can see you can only attach the front 2 screws since the back screw holes are about not lining up with the cage. It’s almost as if the engineers forgot that the screw mounts for the bottom of the drive are if you bottom mount. But when you vertical mount you must use an adapter (like in the 15b version) or you need to adjust you screw holes to the proper side width. This is fine but I knocked a star off because of this. I intend to 3d print some spacers to hold the drives in place.I would have like to see the usb on the bottom center rather than the middle or to the far right or left like other cases they have made. And allow for another 120mm fan or 80mm fan. I may DIY something later to get some air flowing on the other two drives. I get that this is meant to have a security feature for the front. But come on, the key is a bit of a joke. I would prefer an optional knob for home lab.The case can likely support 3-4 more HHDs in the 5.25 bay. Plenty of room to run two stacked and one likely under the two stacked. You maybe able to modify the case to support 4 or even 5 stacked. But you need to be sure to run air over them. Even if it’s super low speed.Even with all this, I still recommend the case if you don’t have a lot of depth.I am keeping it at 4 stars but it really should be 3 stars for used quality. This had screws stripped on the case. Clearly used. But since it’s cosmetic and it will not be seen I’m fine with it.The weight of the case with nothing in it is very lightweight compared to my 15b version. I really like this case but it needs a few more tweaks. If the vendor wants to reach out to me I’m more than willing to give some criticism on some other aspects of the case. I honestly think this case can be a multi versatile case with many options. It’s a perfect depth for some media cabinets and a lot of home lab users would flock to this with some tweaks.