Page 3 - Physical Look - Inside
Getting inside the Antec P20C involves loosening the captive thumbscrews at the back for both side panels. For the tempered glass pane, once the captive thumbscrew is loosened, the side slides off. The panel has a steel frame where the captive thumbscrews exist. A similar frame can be found on the opposite side with notches that fit into the steel frame of the rest of the chassis. There is a small lip that the tempered glass sits on while it is in place. Thanks to the notches at the front, the tempered glass stays in place even if the thumbscrews are loose. Unfortunately, there is no padding between the side panel and the rest of the P20C, which would prevent any damage between the metal and glass. Otherwise, this window is tinted, which should reduce the visibility of black cables inside. It also has a black rim around all of the edges to hide any handling marks you might make while removing or installing the panel. The steel panel is removed in a similar fashion and features the same front notches to keep it in place.
The front panel pops off in multiple sections. First, the steel triangular-grid panel attaches to the plastic front frame with a ball-and-socket joint. Once that is removed, you can then take off the plastic mesh filter underneath. Finally, we are greeted with the three pre-installed 120mm fans. Unfortunately, Antec has not provided much for details about these fans. However, they do terminate in 4-pin headers, which shows they are PWM controlled fans. Otherwise, there is no RGB LED lighting here on the fans, and their all-black design matches the rest of the case in its design.
Once inside, you can see a typical open-concept design, with one primary division in the Antec P20C for the power supply basement. Everything inside follows the all-black exterior. The paint on these panels does not scratch easily, which is good to see. The Antec P20C can handle up to E-ATX motherboards, although this may result in it hanging over the first set of rubber grommets. Thankfully, there is a second set of grommets placed closer to the front for use. At the back, you can see the large opening so users can access the back of the motherboard. This is helpful when installing third-party coolers, as you can change the mounting mechanism while keeping the motherboard mounted. Some motherboards also have M.2 drives on the back, so access here also means quick SSD swapping. There is one more large routing hole, which is at the top of the case. At the very top of the case, you can see mounting rails for users to install cooling options. Antec has mentioned this top area can hold up to three 120mm or two 140mm fans. It can also hold radiators up to 360mm in length. At the back, we have the same rails, except now only limited to 120mm. Unfortunately, Antec did not include an exhaust fan here and users will probably want to install one to help with reducing component temperatures.
Down the back and to the bottom, we can see the expansion slot covers. There is a total of seven, which is typical for a mid-tower case. These slots feature a bridgeless design. Antec says this is to allow for support for vertical mounting of your graphics card, although this would involve removing all of the slot covers. At the bottom, you can see the perforations on the divider between the power supply and the rest of the case. There are also three holes at the back for connecting front I/O connectors and other headers at the bottom of your motherboard. These all have rubber grommets on them, which is much appreciated. There is one more hole closer to the glass side panel where users can route the PCIe power cables to their graphics card.
At the front, we have the other side view of the three front fans. They are mounted on rails to allow users to install more cooling options here. This includes up to three 120mm, three 140mm, or two 185mm fans. It is nice to see support for the larger, less common fan sizes. Otherwise, users can also install a radiator up to 360mm in size. It should be noted that 360mm radiators at the front are limited in thickness with a maximum space of 60mm. Regardless, it is great to see the support for a total of two larger radiators inside the Antec P20C. Moving on, you can see we have even more rubber grommets and holes to pass cables through. In between the two rows of holes, we have a metal bracket with rubber padding. This is actually a GPU support bracket that slides up and down on a rail. It has a rotating arm that extends out to prop your graphics card while staying secured to the back of the P20C. It is a pretty simple design, but it does the job. Otherwise, all of the openings that are not grommeted are folded over with smooth edges to prevent any cuts to cables or your fingers.
At the back, we have all of the cabling space to help you with building inside the Antec P20C. First, you can see the two rows of grommeted holes to pass cables to the motherboard. In between, there is a set of two hook-and-loop straps with Antec branding on them to keep cables in control. Antec has included one more Velcro strap as well in the accessories box. All of the front I/O cables can be seen in black passing through these two rings of straps. Otherwise, we have even more tie down points around the back. A total of 22mm of space is provided between the side panel and the enclosure to help with routing cables around. While this may sound tight, due to the way the side panel attaches to the rest of the case, there is a bit of wiggle room. Unfortunately, we do not have any fan controller included, but Antec did provide a four-to-one PWM connector cable so the front fans only take up one fan header on your motherboard.
As for storage options, first are the two sets of four holes to mount 2.5" storage options. This can be found underneath the motherboard opening. This works by installing standoffs onto your drive and then slotting the standoffs through the four holes, which should hold by friction. The other option for storage is at the bottom of the case, where there is a drive cage for users to install up to two 3.5" or 2.5" options. There is only one tool-less sled provided, but users can screw in their second 3.5" drive on top of the cage. It is not really the most elegant solution and I would have preferred a second sled, but it does get the job done. In the end, a total of four drives can be installed in the Antec P20C, whether it is two 3.5" and two 2.5", or four 2.5" drives, which is sufficient for a case of this size.
Finally, in the basement, we have an area to mount the power supply at the bottom of the Antec P20C. It slides in from the back and sits on top of rubber pads. This ensures there is enough clearance between the bottom and the fan of the power supply for some breathing room.
Page Index
1. Introduction, Packaging, Specifications
2. Physical Look - Outside
3. Physical Look - Inside
4. Installation and Conclusion
