Complex sentence: The Read (16) command is similar to the Read (12) command except that it has a 64-bit LBA field and is thus capable of addressing 8 388 608 PiB (ATA-6 is capable of max 128 PiB).
Split into simpler sentences: The Read (16) command is similar to the Read (12) command except that it has a 64-bit LBA field. And is thus capable of addressing 8 388 608 PiB (ATA-6 is capable of max 128 PiB).