DirecTV Swm, LNB, switches, Power supply admin October 20, 2024 October 20th, 2024 directv directv power supply switches Used DirecTV swm pieces. 1 – swm power inverter 29v. 1 – slimline lnb. 1 – 4 way swm splitter. 1 – 8 way swm splitter. 2 – 16 port swm switch. Some surface corrosion on the lnb housing but not on any connections.