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

Input:
Product title: Genuine RJ-45 USB 2.0 Ethernet LAN Adapter for Lenovo U2L100P-Y1
Product description: Network Standards: IEEE 802.3: 10Base-T / IEEE 802.3u: 100Base-T Data Transfer Rates: Ethernet: 10Mbps (Half/Full Duplex) Fast Ethernet: 100Mbps (Half/Full Duplex) Data Bus: USB 2.0 (1.1 compliant) LED Indicators: Power, Link Power Consumption: 220mW Network Interface: Female RJ45 jack Approximate height: 14 mm (0.45 in) Approximate width: 215 mm (8.46 in) Approximate depth: 20 mm (0.79 in) Weight: 23g (0.051 lb) Package includes: 1X USB 2.0 Ethernet LAN Adapter (.no retial box )
Product feature: Network Standards: IEEE 802.3: 10Base-T / IEEE 802.3u: 100Base-T, Ethernet: 10Mbps (Half/Full Duplex), Fast Ethernet: 100Mbps (Half/Full Duplex), Data Bus: USB 2.0 (1.1 compliant), LED Indicators: Power, Link
Product brand: Fenvi
Target attributes: Data Transfer Rate
Answer: attribute: data transfer rate
value: 100mbps
source: product feature
attribute: data transfer rate
value: 100mbps
source: product description