Review on 🔌 IBERLS Universal 5V DC Power Cable with 10 Connector Tips, USB to 5.5x2.1mm Plug Charging Cord (Including 5.5x2.5, 4.8x1.7, 4.0x1.7, 4.0x1.35, 3.5x1.35, 3.0x1.1, 2.5x0.7, Micro USB, Type-C, Mini USB) by Dave Baker

Instead of buying another PSU I don't want one that has ONE full use I have *these* boost converters ASIN B07L5KNBCN * 12VDC pigtails purchased ASIN B072BXB2Y8 For less money than a good 802.3at PoE injector, or less money than a 48V 0.3A power supply On input I use a 12V 6A regulated power supply from my bin'o' power in the garage. win for me. The green connector mates with a Polycom VVX 400. While this Polycom was available on Amazon for fifty coins, I bought a used EOL voip desk phone from Eees Bay for 18 coins. That's "good enough" to save the family from exorbitant monthly phone bills at home. Now they pay 0.85/room/month + 0.009/minute. Cheers to frugality. MacGyver would be proud.