wa8yxm wrote:
This I understand IF I were ordering I'd take the time to find a C to USB-3 as that's the best his laptop has. if I'm reading his post correctly. the Dock wants to plug into a "C" port. but the laptop only has 2 and 3 ports like the one this laptop replaced This onew has 3 and C
Your miss understanding how the "C" version of a USB port works.
His new laptop has a USB3-C port and the OP also has a matching USB3-C port replicator for that new laptop.
OPs old laptop has a USB3-A version port. The USB3-C port replicator does not work on the old laptop that has a USB3-A port (they tried an adapter or cable that adapted to be able to plug into a USB3-A port.
USB3-C specs unlike USB3-A specs now includes actual HDMI video through the USB port. The Dell USB3-C laptop replicator is designed to use that HDMI data feed to make the video on the replicator to work. Think of as an HDMI extension cord built into the USB3-C port.
USB3-A port does not have HDMI data on it so therefore the USB3-C port replicator does not work.
The work around for this is to buy a generic USB3-A based port replicator. The generic USB3-A replicator will have a built in USB "video card" (same idea as the one that was posted above but replicator also has built in USB hubs) and will show up on the laptop device manager as a separate video card and addition USB port hubs.
Op can then use the generic USB3-A port replicator on both PCs.
I have run into this with some industrial PCs that had an extra add in PCI-E video card. It only worked in a PCI-E slot on that model only that was marked for that add in video card. You could use that slot for other PCI-E cards, but you could not put that card into any other PCI-E slots or in any other PCs.. In a nutshell, the MB of the PCI had two on board video ports, but only one port was connected to the outside world and if you wanted the second port you had to use that special add in card for that model..
Confusing? Yep.
But, OP can just buy a generic port replicator and put the USB3-C replicator in a drawer and forget about it.. They are not all that expensive and it will do the job that they need done.
If OP isn't wanting to buy a generic replicator, then buy the USB to video card that was posted and a separate USB3 expansion HUB, plug the printers and USB video card into the USB3 expansion Hub.. The just switch the USB hub input cable between PCs.. That is an uglier way than just buying a generic USB3-A port replicator but in fact is what the generic port replicator does do..