The Siemens 6ES7790-1AA01-0AA0 is a SIMATIC Field PG accessory — a USB 3.0 SATA adapter kit for hard disk drives, listed for use with Field PG models M6, M5, M4, and M3.
This part carries a mature lifecycle stage, meaning it is no longer in active volume production but remains available through independent distribution channels.
The adapter kit lets you connect a SATA hard disk via USB 3.0 to a SIMATIC Field PG, providing a path for data transfer or drive cloning during maintenance or upgrade cycles. The kit references two companion hard disk order codes (6ES7791-2BA01-0AA0 and 6ES7791-2BA20-0AA0) as compatible drives.