Beta EVO disk drive bay configuration is identical to the one found on the original Beta. The case has four external 5 ¼” bays and five internal 3 ½” bays for hard disk drives. One external 3 ½” bay is available inside the case between the 5 ¼” bays and the hard disk drive bays, however the front panel does not have the proper cut for installing external 3 ½” devices like floppy disk drives or memory card readers. We tried and you cannot install a hard drive in this bay because the holes don’t match. Thus this bay available inside the case is left “dead.” The funny thing is that the case comes with screwless mechanisms for fastening floppy disk drives.

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Figure 12: 5 ¼” bays.

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Figure 13: Internal 3 ½” bays.

All bays use screwless mechanisms. The mechanisms for the 5 ¼” bays don’t come attached to the bays like it happens on high-end models: you have to place them manually, but installation is very easy, all you need to do is to install your 5 ¼” device, place the mechanism on the bay and turn the available knob. You need to install one piece at each side of the bay, because if you only fasten your device from the right side of the case like you would normally do on high-end cases the device will be loose inside the bay.

The screwless mechanisms used for the hard disk drives are comprised of two rulers that need to be installed to each drive, one at each side. No tool or screwing is required.

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Figure 14: Screwless mechanisms and accessories.