We removed the side metal panels as well as the top plastic panel to have a clearer look at the interior layout of the Raven RV04. According to the manual, the chassis is able to accommodate graphics cards that measure up to 13.3-inch (25.4mm) in length. Due to the upside down mounting of the motherboard, there isn't a need to remove the 3.5-inch drive enclosure in order to fit such long graphics cards. And because of that, one of the intake fans has a direct path to cool the graphics card.
From this side of the chassis, we can see the removable motherboard tray that features a number of cut-outs for cable management. The largest cut-out is for the mounting of customized CPU coolers. The tray has markings to indicate the relative positions for the different positions of the motherboards that it supports. There are also measurement markings in centimeters. Interestingly, the Raven RV04 supports two formats of motherboards that are commonly featured in value servers and workstations - they are the SSI-EEB and SSI-CEB formats. The rest of the supported motherboard formats are the usual fare from Extended ATX, ATX and down to the increasingly popular mATX format.
We mentioned earlier that the cooling options of the Raven RV04 are limited to its supplied front intake fans and an optional 120mm rear outlet fan. In order to examine the front cooling fans, we had to remove a section of the front panel, as well as the 3.5-inch drive enclosure. We can see the bottom 180mm intake fan will provide cooling for the storage drives, especially those mounted in the 3.5-inch drive enclosure. The top fan will provide cooling for the expansion cards installed on the motherboard.
The other cooling option is the rear 120mm outlet fan. As a result, in the event of choosing a closed liquid cooling system for the CPU, the user is limited to one that features a single 120mm cooling fan.