StarTech.com RS-232 Serial Extender, Wired, 12 DC, 0 - 40 °C, 4.23 oz (120 g), 1 - DB9; 1 - RJ45 StarTech.com RS-232 Serial Extender. Connectivity technology: Wired. Power supply type: 12 DC. Weight: 4.23 oz (120 g). I/O ports: 1 - DB9; 1 - RJ45