Dell Optiplex-620 User Guide - Page 143

Drives two serial ATA controllers supporting one device each and one parallel Ultra ATA/100 IDE supporting two devices per channel with one channel Expansion Bus Bus type Bus speed Cards Default: no riser-card cage PCI connectors card size connector size connector data width (maximum) PCI Express connectors card size power connector size connector data width (maximum) Optional: full-height PCI Express riser-card cage PCI connectors card size connector size connector data width (maximum) PCI Express connectors card size power connector size connector data width (maximum) Optional: full-height PCI riser-card cage PCI connectors card size connector size connector data width (maximum) PCI 2.3 SATA 1.0a and 2.0 USB 2.0 PCI Express 1.0a PCI: 33 MHz SATA: 1.5 Gbps and 3.0 Gbps USB: 480 Mbps PCI Express x1: 5 Gbps PCI Express x16: 80 Gbps half-length, full-height cards supported with optional riser-card cage low-profile cards supported two low profile 120 pins 32 bits one x16 low profile 25 W maximum 120 pins (x16) 16 PCI Express lanes (x16) low-profile and full-height cards supported two one low-profile card and one full-height card 120 pins 32 bits one x16 full-height 25 W maximum 120 pins (x16) 16 PCI Express lanes (x16) low-profile and full-height cards supported three one low-profile card and two full-height cards 120 pins 32 bits Drives Externally accessible Internally accessible one 3.5-inch drive one bay for CD/DVD or optional second hard drive one bay for a 1-inch-high hard drive Connectors External connectors: Serial Parallel 9-pin connector; 16550C-compatible 25-hole connector (bidirectional)