I just wrote down the model number from the motherboard's windows driver installation CD. But I guess that's a generic one, meant for a series.
Parts of the sudo lshw command that you might find helpful:
physical id: 0
Meanwhile I will open the cabinet/case/box and try to find out the actual model of the motherboard.
description: Audio device
product: N10/ICH 7 Family High Definition Audio Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
width: 64 bits
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=HDA Intel latency=0
resources: irq:16 memory:fdff8000-fdffbfff