Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: PNY Video Card Graphics Cards VCQK420-PB
Product description: The NVIDIA Quadro K420 delivers power-efficient 3D application performance and capability. 1 GB of DDR3 GPU memory with fast bandwidth enables you to create complex 3D models, and a flexible single-slot and low-profile form factor makes it compatible with even the most space and power-constrained chassis. Plus, an all-new display engine drives up to four displays with Display Port 1.2 support for ultra-high resolutions like 3840 x 2160 at 60 Hz with 30-bit color.
Product feature: DisplayPort 1.2 connector, DisplayPort with audio, DVI-I dual-link connector, VGA support, HTC Support, Nvidia Mosaic, Form Factor: low-profile, Chipset: NVIDIA Quadro K420, Video Memory: 1GB DDR3, Connectors: DVI-D Dual Link, DisplayPort
Product brand: PNY
Target attributes: Interface
Answer: attribute: interface
value: None
source: None