Dell OptiPlex 980 Service Manual - Page 5
Audio, Network, System Information, Expansion Bus, Cards - memory
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Memory - Integrated Audio Integrated Network Integrated System Information Chipset DMA channels Interrupt levels BIOS chips (NVRAM) Expansion Bus Bus type Bus speed PCI PCI Express SATA eSATA USB Cards PCI Mini-tower Desktop Small form factor PCI Express x16 (wired as x4) Mini-tower Desktop Small form factor PCI Express x16 Up to 1759 MB shared video memory (total system memory greater than 512 MB) Intel high definition audio Integrated Intel 82578DM Gigabit Ethernet capable of 10/100/1000 Mb/s communication Intel Q57 Express chipset eight 24 64 Mb and 16 Mb PCI 2.3 PCI Express 2.0 SATA 1.0A and 2.0 eSATA USB 2.0 133 MB/s x1-slot (wireless only) bidirectional speed - 500 MB/s x16-slot (wired as x4) bidirectional speed - 2 GB/s x16-slot bidirectional speed - 8 GB/s 1.5 GB/s and 3.0 GB/s 3.0 GB/s 480 MB/s up to two full-height cards without riser card - up to two low-profile cards with riser card - up to two full-height cards one low-profile card one full-height card one low-profile card none