AmzDeals (2 Pack) 1 Foot Black RJ12 6P6C Straight Wired Cable, Professional Grade Made in USA, Compatible with Data and Voice, Phone Cord 12

Good quality.. worked fine for connecting Cisco expansion modules to 7900 series phones.

They work, used it to connect an old keyboard to an older computer.

I use a Victron Energy BMV-712 Smart Battery Monitor with Bluetooth to monitor my batteries while camping. That comes with a 25 cord and while that is great to mount the monitor remotely, I use bluetooth so I dont need that huge cable. This cable (one foot) worked great and now I can ditch the 25 foot one.