The card works the same way, irrespective of Mac model and OS version. Normally, an Ethernet card goes into the LC PDS slot in order to retain sanity. But if you want the Apple IIe card, you can't have your cake and eat it.

I'd go for a model with a Comm Slot port or one that is happy with a SCSI Ethernet adapter. Anything that can take enough VRAM to display colour at 1024 * 768 so that you can use it for more than Apple IIe functionality.