Dell 980 service manual Audio, Network, System Information, Expansion Bus, Cards

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