This is a CTO (Configure-to-Order) component for HP business desktops, specifically an accessory card for dual Thunderbolt 4 connectivity. It allows for high-speed data transfer and display output through its PCIe x4 Low Profile interface.
This card is designed to be integrated into compatible HP business PC chassis that support the CTO option and PCIe expansion slots.
8R951AV - Hp CTO HP DUAL TBT4 PCIE X4 LP CRD