2. 8 x 3.5" Hot-swap SAS / SATA Drive Bays
3. 2 x Internal Fixed HDD Bays (Optional)
4. 1 x Slim DVD-ROM Drive 1 x Slim Floppy Drive (Optional) 5. 3 x 80mm 6300 RPM Fan
6. With Universal I/O (UIO) Card:
3 x Full-height, Full-length I/O
3 x Low-Profile Expansion Slots
Without Universal I/O (UIO) Card:
4 x Full-height, Full-length I/O
3 x Low-Profile Expansion Slots
7. 1x Serial, 2x USB Front Access I/O
8. Power Switch & 6 LED Indicators