Dell GX280DT User Guide - Page 271

Controllers Drives Expansion Bus Bus type Bus speed Small Form-Factor computer PCI connector connector size connector data width (maximum) PCI Express connector connector size connector data width (maximum) Small Desktop computer PCI connectors connector size connector data width (maximum) PCI Express connector connector size connector data width (maximum) Desktop computer PCI connectors connector size connector data width (maximum) PCI Express connectors connector size connector data width Small Mini-Tower PCI connectors connector size small form-factor: one serial ATA controller supporting one device and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel small desktop: one serial ATA controllers supporting one device each and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel desktop: two serial ATA controllers supporting one device each and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel. small mini-tower: two serial ATA controllers supporting one device each and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel mini-Tower: two serial ATA controllers supporting one device each and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel PCI 2.2 SATA 1.0a USB 2.0 PCI Express 1.0a PCI: 33 MHz SATA: 1.5 Gbps USB: 480 Mbps PCI Express x1: 5 Gbps PCI Express x16: 80 Gbps low-profile cards supported one 120 pins 32 bits one x16 164 pins 16 PCI Express lanes half-length cards supported one or two (depending on purchase) 120 pins 32 bits one x16 and an optional x1 120 pins (x16) and an optional 36 pins (x1) 16 PCI Express lanes (x16) and an optional one PCI Express lane (x1) half-height cards supported half-length, full-height cards supported with optional with card cage two (without card cage) two (with card cage) 120 pins 32 bits one x16 120 pins (x16) 16 PCI Express lanes (x16) full-height cards supported three 120 pins