Sandisk Extreme 500, Enable TRIM OSX?

Hello, 

first of all i have confidence in sandisk products however this drive was manufactured to be an external drive not a boot drive, so the recommended use would be for data storage. Furthermore the Trim commands do not pass through a usb connection even though some softwares will send the command and say that trim was performed. 

so even the drive is a sata drive inside the connection  is still usb so the trim command will not work as good as it would run on a normal sata drive. 

of course this is my knowledge and opinion on this.