Dell Precision T3400 User's Guide - Page 25

4 card slots Access connectors for any installed PCI or PCI Express cards. NOTE: The upper five connector slots support full-length cards; the connector slot at the bottom supports a half-length card. NOTE: Check the documentation for cards to ensure that you can accommodate them in your configuration. Some cards that require more physical space and power (such as PCI Express graphics cards) may restrict the use of other cards. Front View (Desktop Orientation) 1 23 456 7 12 11 10 9 8 1 upper 5.25-inch drive Supports an optical drive. bay 2 lower 5.25-inch drive Supports an optical drive or an additional hard drive bay (SATA only). 3 3.5-inch drive bay Supports a floppy drive or a Media Card Reader. 4 hard drive activity light The hard drive activity light is on when the computer reads data from or writes data to the hard drive. The light may also be on when a device such as an optical drive is in operation. About Your Computer 25