Amazon.com: kenable ADSL Broadband Modem Cable RJ11 to RJ11 Black 1m (~3 feet) : Electronics
Amazon.com: RJ45 to RJ11 Cable, 6 Feet Phone Jack to Ethernet Adapter RJ11 6P4C Male to RJ45 8P8C Male Connector Plug Cord for Landline Telephone : Electronics
Modular Cable, RJ11 - RJ45, 1:1, Black, 1m
1m RJ11 Telephone Cable to RJ45 Ethernet 4 pin 8P4C 6P4C ASDL Patch Lead BLACK 5056255313704 | eBay