Ableconn PI232DB9M Compact GPIO TX RX to DB9M RS232 Serial Expansion Board for Raspberry Pi M.2 SATA SSD (Stackable)

Does the wire harness that comes with this cross rx and tx?

Can you boot a rasberry pi from this? i've purchased one, and seem to have issues with insufficient power when booting up, and will not boot from ssd

Does it support M.2 NVME SSDs?

will it work on a pi zero?