2. 6 x 3.5" Hot-swap SAS / SATA Drive Bays
3. 1 x 5.25" Peripheral Drive Bay
4. 1 x Slim CD-ROM Drive (Optional)
1 x 3.5" Floppy Drive (Optional)
5. 4 x 80mm 6300 RPM Fan
6. 7 x Low-profile, Full-length I/O Expansion Slot
7. Power Switch & 6 LED Indicators