This is a 12 inch long, 2.54 mm (0.1 in) pitch male to 2.0 mm pitch 6 pin female console port connector for the Linksys WRT series (WRT1200AC, WRT1900AC, WRT1900ACS, WRT3200ACM, etc.) routers. It will mate with a USB to TTL serial console adapter (www adafruit com/products/954) or similar with same pitch connectors to allow flashing factory or open source (DD-WRT, OpenWRT, etc.) firmware. The relatively low volume and shipping costs from China was cost prohibitive to order just one, so I had 100 pieces made. I'm basically selling them at cost after manufacturing, shipping, eBay/PayPal fees, envelopes, etc. Hopefully, others can make use of the cable as well.  (US Export ECCN: EAR99, NLR)