Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: MSI Socket AM3/AMD 770/SATA3&USB3.0/DDR3/A&GbE/ATX Motherboard 870A FUZION
Product description: MSI 870A FUZION Socket AM3/AMD 770/SATA3&USB3.0/DDR3/A&GbE/ATX Motherboard
Product feature: CPU: Socket AM3 Support 64bit AMD Phenom II X6/X4/X3/X2, Athlon II X4/X3/X2 and Sempron Series Processor; Support HyperTransport 3.0; FSB upto 5200MT/s Chipset: AMD 770 + SB710 Chipset, Memory: 4x 240pin DDR3-1600(OC)/1333/1066 DIMMs, Dual Channel, unbuffered, Max capacity upto 16GB Slots: 2x PCI-Express 2.0 x16 Slots; 2x PCI-Express x1 Slot; 1x PCI Slot, IDE/SATA: 6x SATA2 Ports, Support RAID 0, 1, 10(by AMD SB710); 2x SATA3 Ports, Support RAID 0, 1(by Marvell 88SE9128) Audio: Realtek ALC892 Flexible 8-Channel Audio CODEC, LAN: Realtek 8111E PCI-E Gigabit Ethernet Controller, Ports: 12x USB 2.0 Ports(6 rear, 6 by header); 1x USB 3.0 Ports; 2x PS/2 Ports; 2x IEEE 1394 Ports(1 rear, 1 by header); 1x Coaxial SPDIF-out; 1x Optical SPDIF-out; 1x RJ45 LAN Port; Audio I/O Jack Power Connector: 1x 24pin Main Power, 1x 8pin CPU Power
Product brand: MSI
Target attributes: Chipset
Answer: attribute: chipset
value: amd
source: product description
attribute: chipset
value: amd
source: product title
attribute: chipset
value: amd
source: product feature
attribute: chipset
value: amd 770 + sb710 chipset
source: product feature