This is the Switch equivalent of 3DS exheader. This is the 0x408-byte file with extension ".npdm" in {Switch ExeFS}.

Offset Size Description
0x0 0x80 META
0x80 0x200 RSA-2048 signature, followed a RSA-2048 modulus for {Switch version of NCCH header}?(Like 3DS)
0x280 0xD0 ACID
0x350 0xB8 ACI0

META

Offset Size Description
0x0 0x4 Magicnum "META".
0x20 ? Name string
0x70 0x4 Absolute offset for ACI0.
0x74 0x4 Size of ACI0.
0x78 0x4 Absolute offset of the RSA signature?
0x7C 0x4 Size used with the above offset?(0x2C8 normally)

Switch version of 3DS "System Control Info"?

ACID

Offset Size Description
0x0 0x4 Magicnum "ACID".
0x4 0xCC ?

Switch version of 3DS ACI(Access Control Info)?

ACI0

Offset Size Description
0x0 0x4 Magicnum "ACI0".
0x4 0xB4 ?

Switch version of AccessDesc?