I am truly sorry. I can't understand the physical networking from the pics or the description... I'm probably just missing something. There is one blue plug going from the laptop to the cisco switch or the pci wifi module? I see a blue plug going to each device. So I'm guessing everything is plugged into the cisco switch?
if you could show all the wiring and label it (according to the table below) i think it would add a lot of value for someone less familiar with these kinds of setups (like me)
Hey, op here, this was almost a decade ago, but I'll try to describe what's going on here. It's kind of a crappy picture.
* WAN connection comes in by coax, into my cheapo cable modem (off screen), and then by Ethernet into the franken-NIC sitting on top of the laptop.
* The NIC on top is a normal PCIe card, but with the bracket missing. The ExpressCard riser [1] is connected by a mini-HDMI cable, the flat black cable, which curves up, around, and back in from the left side into the laptop
* Then, the blue cable on the side of the laptop is a VLAN trunk going into the Cisco switch on port 23/24, outside the picture.
* From there, another port on the switch is setup as an access/untagged port going into one of the LAN ports on the D-Link acting as the access switch
I don't think it was set up here, but at one point I also had a dock under the ThinkPad, with the serial adapter wired up to the switch's console port so I could manage everything by ssh'ing into the router.
[1] https://www.ebay.com/itm/115721630079
Also note that all the cables were hand-crimped because I was too cheap to buy new patch cables at the time.
I was in college, and truly had more time than money back then. it's the kind of doohickey made by only somebody very young, very crazy, or a bit of both. ;)