SHARPALIN 5 Feet DB9 Female to Audio DC3.5mm Serial Cable (DB9 Female to 3.5mm)

Works great. The 3.5mm plug pinout is Tip: Receive Ring: Transmit Sleeve: Groundso if you may need a null-modem adapter depending on the device at the other end.

Works as expected.I have confirmed it works with newer Meru/Fortinet APs. Now, when I try to RMA an AP, I can tell the support person "It's dead! It won't light up, AND it won't telnet."

This does not appear to work with a Global Cache iTach Flex