Name: C62x Chipset QuickAssist Technology
"QuickAssist" PCIe crypto/compression co-processor integrated into some models of the C62x [Lewisburg] PCH.
In the QAT driver installation instructions, they include this note:
For the Platform Controller Hub, verify the device is enumerated properly using the lspci command:
# lspci -d 8086:37c8
From Intel Ark: the C625, C626, C627, and C628 are currently listed as having QuickAssist.