Asus Prime X670-P vertical Key E bracket -

If all slots used does include standard PCIe then there's A+E-keyed to M-key adapter sam55todd_ A+E has

This adapter allows the user to extend a key b module slot For instance when a SIM card holder is missing or when a larger type needs

vertical mail slot This adapter allows the user to extend a key b module slot For instance when a SIM card holder is missing or when a larger type needs

u2 slot slot you will see used in laptops for WiFi cards See, the specification allows two separate PCIe links connected to the E-key slot