Yes, you can do that, first ssh into your Synology NAS then create a script here /usr/local/etc/rc.d/
like with vi
with sudo vi /usr/local/etc/rc.d/load-modules.sh
put this inside
#!/bin/sh
case $1 in
start)
echo "Loading usbserial.ko and cp210x.ko modules..."
insmod /lib/modules/usbserial.ko
insmod /lib/modules/cp210x.ko
;;
stop)
echo "Unloading usbserial.ko and cp210x.ko modules..."
rmmod cp210x
rmmod usbserial
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
;;
esac
exit 0
then give it the execute permission sudo chmod +x /usr/local/etc/rc.d/load-modules.sh
You can test if your script work like that sudo /usr/local/etc/rc.d/load-modules.sh start
Then restart your Synology NAS, now it is loaded at startup.