To gain access to the interior, simply remove the thumb screws holding both the glass and steel panels in place. Besides the more elaborate gray cable cover, the interior looks quite simple upon first inspection. The gray part covers a large opening in the motherboard tray as you won't find the usual smaller holes with rubber grommets. It will be interesting to see how this design element will affect the case's fully assembled look.
Thanks to the width of the chassis, you have more than 30 mm worth of space to work with behind the motherboard tray, which is much more than other cases of this size tend to offer. The large opening underneath the gray cover also acts as a cable channel thanks to two plastic clips which hold the bulk of it in place. You can also see the small PCB for the lighting elements in the top-left corner - nicely placed out of the way. A metal bracket gives you two 2.5" slot.
A metal shroud covers the PSU and 3.5" hard drive area to keep things tidy within the chassis. Antec, however, also includes two metal 3.5" drive cases here to make the most of the available space. An opening in the shroud along the front of the P110 Luce allows for 360 mm radiators to be placed there, but you need to make sure it is thin enough. If you want to go for a thick variant, you will still be able to go all the way to 280 mm instead. The gray metal cover for the cable opening also acts as a support for long GPUs. Antec includes a plastic bit here for this very purpose. While this is a nice touch, the material is quite soft, so it will bend downward under pressure once a graphics card rests on it.
Underneath the metal shroud are two more 3.5" hard-drive trays, which brings the total number of bays within the P110 Luce to four 3.5/2.5 " and two 2.5" variants - plenty for most users out there. As mentioned previously, the entire front is meant for cooling and comes equipped with a dust filter. The 120 mm intake fan is identical to the one in the rear of the chassis and pulls air into the interior through the front.
Looking at the rear, underneath the shroud once again, the PSU bay comes lined with a foam strip as an anti-vibration measure. Above that are the 8+2 expansion slots. However, it is not explicitly obvious what the two vertical openings are to be used for. Out of the box, the two HDD cages take up the space, and you won't get the required accessory to place the GPU here. Antec has chosen to hold the horizontal ones down with traditional screws - having thumb screws instead would have been nice. Above that is the aforementioned exhaust fan you may adjust in height to have it line up perfectly with a tower cooler for the CPU.
Taking a quick look at the ceiling, you can clearly see the opening for the two 120/140 mm fans. There is enough space here to go for a thin radiator combo of up to 240 mm in size if you want. While the fan mount would allow for 280 mm radiators as well, Antec officially does not support those - you are left to try your luck without any guarantees.
The only traditional cable you will find is for power as everything else is attached to the PCB within the chassis. The I/O elements come with the usual plugs. As there is an HDMI connector, you will find the approproiate lead within the chassis as well. This is the reason there is a square opening in the back of the case, as it will allow you to route the HDMI cable to the back of your graphics card. The RGB elements within this case come with the standard 4-pin connectors, and the PCB for them is powered by a Molex plug.