Does one fixed profile cover the request?
Match exact voltage and sufficient current.
Open Fixed Profile Matcher →Charging workbench
Start with the charging question you actually have.
A fixed profile, PPS range, complete setup, and occupied-port table are different evidence.
Does one programmable range cover the point?
Check voltage, current, and power simultaneously.
Open PPS Range Checker →What current and cable class are required?
Convert documented voltage and watts into 3 A/5 A and SPR/EPR.
Open PD Requirement Builder →Where is the charging bottleneck?
Screen device, active port, cable, PPS, and vendor protocol.
Open Charge Check →What changes between two port scenarios?
Copy exact manufacturer-table outputs and find gains, losses, or disabled ports.
Open Scenario Comparator →Can the chosen row cover several devices?
Screen device targets against per-port ceilings and the total budget.
Open Multi-port Planner →Does a dock supply cover every budget?
Add delivered host power, dock reserve, and downstream devices.
Open Hub Power Budget →Why is charging slow or absent?
Build a direct-path control before replacing parts.
Open Troubleshooter →Sequence: documented request → exact profile or range → cable class → active-port row → assembled-path observation.