u/colakmert

**TL;DR:** My ASUS ProArt PX13 (HN7306WV, Ryzen AI 9 HX 370 + RTX 4060) almost always negotiates a low USB-C PD profile (~30-45W) from a 200W charger, and Windows shows a "slow charger" warning. Only very rarely — maybe 1 in 10-15 plug cycles, or when the laptop is shut down — does it briefly negotiate ~60W. Battery drains while plugged in under any load. I've exhausted every troubleshooting step I can think of.

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## Hardware

- **Laptop:** ASUS ProArt PX13 HN7306WV (Ryzen AI 9 HX 370, 32GB RAM, RTX 4060 Laptop GPU, AMD Radeon 890M iGPU)

- **BIOS:** HN7306WV.316 (March 2025)

- **OS:** Windows 11 (Build 26100)

- **Battery health:** 63,293 / 73,000 mWh (~86.7%, normal wear)

- **Charger:** Anker Prime 200W 6-port GaN (A2683) — single USB-C port rated up to 100W (5V/9V/15V/20V × up to 5A)

- **Cables tested:** 3 different USB-C-to-C cables, including a brand new 240W Anker EPR cable. Original ASUS 200W proprietary adapter is at another location, not available right now.

## The Problem

This is the part that's driving me crazy: **the behavior is inconsistent and unpredictable.**

- Most of the time, charging is stuck at **30-45W** and Windows shows a **"slow charger connected"** warning.

- I have unplugged and replugged the cable **10-15 times in a row** — only occasionally does it briefly jump to ~60W, then drop back.

- When the **laptop is shut down** and I plug it in, it sometimes negotiates **~60W** (presumably because PD renegotiates from scratch with no OS running). But as soon as I boot Windows, it drops back to 30-45W and the slow charger warning appears.

- Under any actual load, the **battery percentage drops while plugged in** — the laptop consumes more than USB-C delivers.

Measured via PowerShell:

```

Get-WmiObject -Namespace root\wmi -Class BatteryStatus | Select ChargeRate, Voltage

```

ChargeRate consistently in the 16,000-43,000 mW range, rarely up to ~60,000 mW.

## What I've Tested

**Cables:**

- Stock Anker 200W cable → 17W (worst, probably faulty E-Marker)

- Generic USB-C-to-C cable → 30W

- Belkin 60W cable → consistent 60W (hit cable limit)

- Brand new Anker 240W EPR cable → still 30-43W most of the time

**Ports:**

- Both USB-C ports on the laptop — same result

- Multiple USB-C ports on the Anker Prime — same result

- Nothing else plugged into the charger (full 200W budget available)

**Software / Settings (tried every combination):**

- Windows power plan: Balanced, Performance, Power Saver, ASUS Standard, ASUS Whisper, ASUS Performance — **no difference**

- MyASUS → Battery Care Mode: **OFF**

- MyASUS → Operating Mode: tested Whisper / Standard / Performance — **no difference**

- MyASUS → GPU Mode: Standard / Eco / Optimized — **no difference**

- Disabled NVIDIA RTX 4060 in Device Manager — **no difference**

- CPU sits at 4% idle when tested, so it's not load-related

- Battery at 13-19% (well below any throttling threshold)

- Laptop cool, fans normal (not thermal throttling)

**Plug-cycle test:**

- Unplugged and replugged USB-C cable 10-15 times consecutively

- Result: mostly 30-45W with "slow charger" warning, very rarely ~60W for a moment, then back down

**Shutdown vs. on:**

- When the laptop is **off** and plugged in → sometimes negotiates ~60W

- When the laptop is **on** → almost always 30-45W with slow charger warning

This strongly suggests something in the Windows / ASUS driver / EC firmware is renegotiating the PD profile *downward* after boot.

## What I Suspect

1. **ASUS firmware is artificially capping USB-C PD input on this model.** PX13 ships with a 200W proprietary barrel adapter; ASUS may have locked USB-C charging to a low profile as an "emergency travel" mode. MyASUS literally warns: *"For best performance, please use the adapter that came with your computer."*

2. **EC/PD controller is renegotiating to a lower profile after Windows boots.** The fact that it sometimes works at 60W when shut down but always drops on boot points to a Windows-side or ASUS service intervention.

3. **Possible hardware fault in the PD chip on my unit.** But behavior is consistent across both USB-C ports, which makes me think it's firmware, not hardware.

## Questions for the Community

1. **Other PX13 (HN7306WV) owners** — what charging wattage do you see via USB-C from a 100W charger? Do you also get the "slow charger" warning?

2. **Is there a hidden BIOS setting** to disable USB-C PD wattage limiting? I've gone through every BIOS page and don't see anything obvious.

3. **Has anyone tried the EC reset** (Vol-Down + Power held 40 seconds) on a PX13 and seen USB-C wattage improve afterward?

4. **Is there an ASUS service or driver** that intentionally renegotiates the PD profile downward on boot? If so, can it be disabled?

5. **Is this actually expected behavior** — i.e., the PX13's USB-C ports are firmware-limited to ~45W on AC, with the full 200W only via the proprietary adapter? If yes, I'll stop chasing it and just use USB-C for travel only.

Any insight from PX13 owners, ASUS techs, or anyone who's solved this would be hugely appreciated. I want to rule out user-fixable issues before sending it to service.

Thanks in advance.