Power adapters - gilderchuck/connect-the-dots GitHub Wiki

Power adapter compatibility matrix

(Amazon seems to delete support pages for old devices one after the other. So this reference table might also become useful.)

Pwr Voltage Current Old models New models Compatible devices
5W 5.25VDC 1A PS39WR Low-power USB-A: C1125P(Input) LY73PR(Stick2)
9W 5.2VDC 1.8A PS57CP USB-A: LDC9WZ(FTV3) W87CUN(Stick1)
12.6W 9VDC 1.4A PA32EU PA32NA PA32UK G6A87E(Hub)
14.9W 5.95VDC 2.5A CFE90F CL1130(FTV1)
15W 12VDC 1.25A GP92NB LA23EU LA23NA LA23UK PA23EU PA23NA PA23UK EX69VW(Cube1) A78V3N(Cube2) GA5Z9L(Cube3) D9N29T(Dot3-1) C78MP8(Dot3-2) 36EBT3(Dot3Clk) B7W64E(Dot4) B7W644(Dot4Clk) C2N6L4(Dot5) C4E8S3(Dot5Clk) C2H4R9(Pop) H23K37(Show5-1) C76N8S(Show5-2) VN94DQ(Spot1) BV84J9(Spot2)
21W 15VDC 1.4A PS73BR SK705DI(Echo1) XC56PY(Echo2) DV83YW(FTV2) ZE39KL(Plus1) MW46WB(Show1)
22W 15VDC 1.47A PA27EU PA27NA PA27UK H97N6S(Show5-3)
30W 18VDC 1.67A K3V1N9 K3V1EU K3V1UK PA24EU PA24NA PA24UK R9P2A5(Echo3) L4S3RE(Echo4) L9D29R(Plus2) DW84JL(Show2) C7H6N3(Show8-1) A8H3N2(Show8-2) R85SD6(Show8-3) T4E4AT(Show10-3) H6Y2A5(Show15-1) CP38RE(Show15-2) SY7323(Show21)

To simplify things every device has a fixed input voltage: ~5,~6,9,12,15 or 18V. They need a power supply with the same voltage, either old or new.
The only exception from this rule is PS39WR: it is rather underpowered compared to PS57CP. (So devices which require higher current won't start with a PS39WR.)

Alternative models

These are being sold second hand and look genuine. I just couldn't find them being referenced in official documentation as of 2025. (It's possible they came with devices originally but Amazon only sold a few specific models as replacement.)

  • GP92NB alternative found: GP92NA
  • PS73BR alternatives: LC89KS PS59CV PS96CW RE78VS

TBD: chase down barrel connector sizes and polarities
TBD: possibly add tablets, some of which uses USB-C