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: Azio Wired ADSL 2+ Modem (DL-4101)
Product description: This Wired ADSL 2+ Modem supports full-rate ADSL2+ connectivity conforming to the ITU and ANSI specifications. In addition to the basic DMT physical layer functions, it features strong functions (for example: MAC filter), high performance, and easy configuration. With standard Ethernet interface, it can be directly connected to any 10M/100M Ethernet devices, supporting Auto MDI/MDIX
Product feature: Access a high-speed DSL Internet connection, Support up to 24Mbps downstream and 1Mbps upstream speed, Management interface based on web browser, easily configure the modem, MAC filter for LAN access safety
Product brand: Azio
Target attributes: Enclosure Type
Answer: attribute: enclosure type
value: None
source: None