I've never found any one particular USB-Serial Adapter to be any more reliable with the FTDI drivers on the Mac. Currently using the Tripp Lite Keyspan, Model

I've never found any one particular USB-Serial Adapter to be any more reliable with the FTDI drivers on the Mac. Currently using the Tripp Lite Keyspan, Model USA-49WG, SKU CU8037. Appears on the USB chain as: Product ID: 0x0131, Vendor ID: 0x06CD. I carry a Dell Laptop when going to customer sites+Putty for consoling into Cisco Routers because I've never found a Serial Cable/USB combination that doesn't cause the Macbook air to Kernel Panic. I'll give the PL-2303 based device a chance - I see there is a nice comparison site here: http://www.usconverters.com/index.php?main_page=page&id=60 http://www.usconverters.com/index.php?main_page=page&id=60 I'll definitely try the Trendnet TU-S9. Here's hoping 4 years of weekly hell on my mac laptop comes to an end...