The Siemens 6AV6371-1DH07-3FJ0 is a SIMATIC WinCC/Web Load Balancing STEP UP V7.3 license. Here are its key specifications:

License Type: Power Pack upgrade from WinCC/Redundancy V7.3 to WinCC/Web Load Balancing V7.3, single license

Compatibility: WinCC V7.3

Functionality: Enables load balancing across two web servers

System Requirements: Windows 64-bit required at the server end

Delivery: License key on USB flash drive

Product Lifecycle: Phased out since October 1, 2019

Compliance: RoHS directive compliant

Country of Origin: Germany

Weight: 0.201 kg

Packaging Dimensions: 19.20 x 27.50 x 3.00 cm