NZXT Guardian 921 ReviewThe Smith -
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When you first open the case, you will see that all cables are in a bag to protect them. There is also a brown paper meant to absorb humidity. In the next picture, you can see that there are five 5.25" drive bays and two 3.5" ones. However, the two first bays from the top are not external.
This is why they put a 5.25" to 3.25" bay adapter. It allows you to install another hard drive at the top. You can mount it on the adapter either by using the screw holes on the side, or the ones on the bottom. So there is only tool-free devices for the external bays. The third picture is the hard drive cage and the external 3.5" drive bays. To have access to the fan behind the cage, you'll need to remove four screws in order to take the cage out.
Next this is the tool-free PCI card hangers. To put the card in, you have to push on the hanger from the inside. Then you install the card, and push on the hanger from the outside. You also get a better view on the two holes used to run water tubing to an external radiator.
This case has a lot of cables. There are two Molex connectors to power the temperature reader and and the LEDs that light the three lines on the front. Then with the temperature reader comes three probes labeled CPU, SYS and HDD, respectively. Obviously, there is also the power and reset switch connectors, as well as the hard drive LED and speaker. Finally, the front panel connectors are USB 2.0 and HD audio or AC'97, with separate wires.
Lastly, here are its three fans. The ones with blue LEDs are at the top. What's great, is that each fan has also a 3-pin connector that can be used instead of their Molex connector. That allows you to plug them into the motherboard, or even in their Aluminum high performance fan controller, the Sentry LX.