MacBook Air 13" A1466. I/O board contains MagSafe port, USB port, and headphone audio jack. Original Premium Apple Part Fully Tested. Apple Part #: 923-0439. PART NUMBER'S Printed Part #: 820-3455-A.
Worth the extra effort I had to order twice to get the correct I/O board but it makes all the difference I'm able to salvage an older MacBook Air instead of having to dispose of it.