Dell GX280DT User Guide - Page 272

connector data width (maximum) PCI Express connector connector size connector data width (maximum) Mini-Tower PCI connectors connector size connector data width (maximum) PCI Express connectors connector size connector date width (maximum) 32 bits one x1 and one x16 36 pins (x1) and 120 pins (x16) one PCI Express lane (x1) and 16 PCI Express lanes (x16) full-height cards supported two 120 pins 32 bits one x1 and one x16 36 pins (x1) and 120 pins (x16) one PCI Express lane (x1) and 16 PCI Express lanes (x16) Drives Externally accessible: Small Form-Factor computer Small Desktop computer Desktop computer Small Mini-Tower computer Mini-Tower computer Internally accessible: Small Form-Factor computer Small Desktop computer Desktop computer Small Mini-Tower computer Mini-Tower computer one bay for a slimline floppy drive one bay for a slimline CD/DVD drive one 3.5-inch bay one 5.25-inch bay one 3.5-inch drive one bay for CD/DVD or optional second Hard Drive two 3.5-inch drive bays two 5.25-inch drive bays one 3.5-inch drive bay two 5.25-inch drive bays one bay for a 1-inch-high hard drive one bay for a 1-inch-high hard drive one bay for a 1-inch-high hard drive two bays for 1-inch high hard drives two bays for 1-inch high hard drives Connectors External connectors: Serial Parallel Video Network adapter Optional PS/2 with secondary serial port adapter USB Audio System board connectors: Primary IDE drive Serial ATA Floppy drive Serial Fan PCI 2.2 9-pin connector; 16550C-compatible 25-hole connector (bidirectional) 15-hole connector RJ45 connector small form-factor computer: one 6-pin mini-DIN with a Y-adapter small desktop, small mini-tower, desktop, and minitower: two 6-pin mini-DINs two front-panel and six back-panel USB 2.0- compliant connectors three connectors for line-in, line-out, and microphone; one front-panel connector for headphones 40-pin connector small form-factor computer: one 7-pin connector small desktop computer: one 7-pin connectors desktop computer: two 7-pin connectors small mini-tower: two 7-pin connectors mini-tower: two 7-pin connectors 34-pin connector 12-pin connector for optional second serial port card 5-pin connector 120-pin connector