The Siemens 6AV6371-1DX07-3BC0 is a WinCC/Industrial-Data-Bridge V7.3 Power Pack, designed to upgrade from 512 to 2048 tags. It comes with a single license and a license key on a USB stick this product has been discontinued 

Product Type: WinCC/Industrial-Data-Bridge V7.3 Power Pack

Upgrade Path: From 512 to 2048 tags

Software Type: Single license

License Key: Provided on a USB stick

Installation Medium: CD-ROM

Weight: Approximately 0.201 kg

Packaging Dimensions: 19.00 x 24.10 x 2.50 cm

Country of Origin: Germany

Compliance: RoHS directive compliant

Product Lifecycle: Discontinued (since March 31, 2023)