No, the ASUS ROG Strix Z270e does not support M.2 NGFF Key A+E.
No, the ASUS ROG Strix Z270e does not support M.2 NGFF Key A+E.
This board lacks both an A key and an E key M.2 slot. The only desktop motherboard brands referencing M.2 key E are Asrock, as seen in their Z270 Taichi model.
You're welcome for your feedback. Could you confirm if the adapter supports a M.2 Key A or E for a PCIe device? That would help determine compatibility with your card.
In theory it shouldn't be like this, but in reality these off-brand products often lack consistent quality.