Original 400W ADL400SDC3A ADL400SCC3A Charger for LENOVO Legion Pro 7i Gen 10’s

FAQs: Genuine Lenovo 400W Slim Tip Original Charger (Model ADL400SDC3A / ADL400SCC3A)

Q1: Ok, I need the exact original charger for my Lenovo Legion Pro 7i Gen 10 laptop. Is this REALLY the official one, not a copy?
Yeah, we get this a lot. This is the genuine original Lenovo 400W power adapter. The model numbers are ADL400SDC3A or ADL400SCC3A – you can match it to the tiny print on your old charger or check your laptop's specs. We source these directly from authorized channels. Using a true original 400W charger for your Legion Pro 7i is critical because the high-performance RTX graphics and processor need that stable, full power to work right. Knock-offs often say 400W but can't actually deliver it consistently, which can throttle your game performance.

Q2: I'm running an RTX 4080 or 4090 in my Legion laptop. Will this 400W adapter actually prevent slowdowns during long gaming sessions?
Honestly, this is the whole point of this specific charger. The original 400W power supply for Lenovo Legion 7i Gen 10 is built to handle the max power draw from those top-tier components. The key spec is 20V and 20A output – that's what adds up to the full 400W. If you use a lower-wattage charger (like a 300W one), your system will literally slow down (it's called power throttling) to protect itself when you're pushing it in games or video editing. So yes, this is the one you need to get the performance you paid for. It's a must-have for RTX 4080/4090 laptop models.

Q3: What's the actual difference between the ADL400SDC3A and the ADL400SCC3A model number? I'm confused.
Good question, it's super confusing. For all practical purposes, they are the same original 400W charger. The different letters at the end usually just indicate a minor manufacturing batch or regional variation. The electrical specs, fit, and performance are 100% identical. We list both so you can match your exact code. If your old charger says ADL400SDC3A, get that one. If you're not sure, either will work perfectly with your Legion Pro 7i or similar Legion 7 model. It's still the official Lenovo part.

Q4: How do I know this is a reliable charger? I don't want something that overheats or fails in 6 months.
Totally fair concern. A few things here: First, because it's the original OEM Lenovo adapter, it has all the proper internal safety protections (over-voltage, short-circuit) that Lenovo engineered for your expensive laptop. Cheaper generics often skip these to cut cost. Second, the build quality is different – the cable is thicker, the connector feels solid. We've had ours for over a year in daily use with no issues. For a critical component like this, the reliable choice is always the original manufacturer's part. It's the definition of good value – you pay once for peace of mind.

Q5: This original charger is more expensive than some "compatible" ones on Amazon. Why shouldn't I just buy a cheaper 400W adapter?
Look, you could. But here's the thing we hear from customers who tried that: First, many advertised as "400W for Lenovo" don't actually output a sustained 400W; they overheat and dial back the power. Second, compatibility can be flaky – sometimes the laptop doesn't recognize it correctly and limits charging speed. Third, and this is big, using a non-original high-wattage charger can sometimes void your laptop's warranty if there's a power-related issue. So while our price for this genuine Lenovo Legion Pro 7i Gen 10 400W AC power adapter might be a bit higher, you're paying for guaranteed safety, full performance, and no compatibility headaches. It's the high-value, reliable buy for protecting your $2,000+ gaming laptop investment.