nVidia Corporation CK804 Ethernet Controller (rev a2) - Works with Free Software.
lspci -nnpk
00:0a.0 Bridge [0680]: NVIDIA Corporation CK804 Ethernet Controller [10de:0057] (rev f3)
lspci -vmmnn
Device: 00:0a.0
Class: Bridge [0680]
Vendor: NVIDIA Corporation [10de]
Device: CK804 Ethernet Controller [0057]
SVendor: ASUSTeK Computer Inc. [1043]
SDevice: K8N4/A8N Series Mainboard [8141]
Rev: f3
lspci -v
00:0a.0 Bridge: NVIDIA Corporation CK804 Ethernet Controller (rev f3)
Subsystem: ASUSTeK Computer Inc. K8N4/A8N Series Mainboard
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 23
Memory at d5000000 (32-bit, non-prefetchable) [size=4K]
I/O ports at b000 [size=8]
Capabilities: [44] Power Management version 2
Kernel driver in use: forcedeth