Google coral on systems which don't have m.2 E-key

Wondering about using Coral Dual Edge TPU on systems which don't have m.2 E-key?
(or E-key slot is not to full specification):

• PCIe x1 adapter is to connect Coral Dual Edge TPU to desktop PCIe x1 slot
• m.2 BM adapter is to connect Coral Dual Edge TPU to a system with m.2 B or M key slot. Important it has to be m.2 slot for NVMe (PCIe) drives. Slots for SATA drives and USB-SATA enclosures will not work. Also, I don't expect USB to m.2 B/M NVMe enclosures to work as well
• m.2 AE adapter is to connect Coral Dual Edge TPU to a system with m.2 A or E key. If you have E-key make sure you can only see one core, otherwise you're lucky and don't need adapter at all

In all of cases above, there must be PCIe on a slot. For example, m.2 slot for LTE modem might only have USB and no PCIe.