The two delicate cable connectors are reconnected to the PCB by offering them into place then gently pressing them back onto their respective connections with the aforementioned wooden implement. To avoid the lower cable getting in the way, re-attach the upper connector first & then the lower connector.

The largest of the three connectors slides back into its socket without trouble.

Offer the power cable and socket back into its holder on the inside of the case.

Reattach the metal plate using the four screws removed earlier with the Torx T8 screwdriver.

Finally, clip the black plastic base back on to close the unit up - and it's time to test...

Launch Airport Utility to check the disk is recognised OK, and erase it if necessary.