Netgear DG834G router, circa 2007, missing power supply (New Marston OX3)

Netgear DG834G router, circa 2007. Missing power supply (12V DC, centre positive). Seems to work. Manual: https://www.downloads.netgear.com/files/GDC/DG834GV4/DG834Gv4_RMsrc_13Sep07...