what is the maximum wattage? I used a similar one before which was only 120w max and did not provide the full output of my 240w laptop charger.

Realize this is late to the party but for others who might read...I used this with my Alienware m15 R7 laptop which was drawing a max of 180w while gaming. The the adapter was fine, not hot. The power jack on this laptop is right next to the hot output fan so it was a little hard to tell if the adapter was actually a little warm from the current or just picking up heat from the output fan (these laptops run hot when gaming). My laptop ships with a 240w power supply but in reality I've not actually seen it draw over 200w. However your amperage may vary. I have Nvidia 3060 but other models may have up to 3080 or 3090 which I'm sure will draw more power. Personally I would be careful with anything over 240w with this adapter. Run some attended tests before using unattended.

Does this work using a dell precision 7740 laptop and its 240watt power supply that the 7740 comes with ? .

Should work if the laptop takes a 7.4 mm connection

Does this work on HP G7 laptop?

I have never used it for HP laptop, but I think it will work with what I can find online. It definitely works with Dell Latitude laptops. the charger plug has a 7.4mm outer diameter. and a 5mm inner diameter with a pin. Hope this helps.

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7.4mm x 7.4mm Right Angle 90-Degree Power Adapter Connector Converter for Hp Pavilion Probook Elitebook Envy Compaq Presario/Dell Latitude XPS Studio Vostro Laptop AC Charger[1Pack]

7.4mm x 7.4mm Right Angle 90-Degree Power Adapter Connector Converter for Hp Pavilion Probook Elitebook Envy Compaq Presario/Dell Latitude XPS Studio Vostro Laptop AC Charger[1Pack]

Product ID: 113671871

Details

Brand
Iwlikey
Color
1 Pack
Compatible Devices
Laptop
Connector Type
Coaxial
Finish Type
Plastic

⚡Leakage & short circuit protection

🔌7.4mm to 7.4mm precision fit

↪️90-degree right angle space saver

Description

🔋 Power up smartly, save space stylishly!

SAFE SMOOTH CHARGING - Original chip technology guarantees stable current flow with built-in leakage and short circuit protection.
ULTRA LIGHTWEIGHT COMPACT - At just 10g and 2cm length, this adapter is the discreet power upgrade your laptop setup deserves.
DURABLE HEAT RESISTANT BUILD - Crafted from stain and warm-resistant plastic for long-lasting, reliable performance under pressure.
UNIVERSAL 7 4 MM COMPATIBILITY - Seamlessly connects with a wide range of Dell & HP laptops, ensuring perfect power delivery every time.
SPACE SMART RIGHT ANGLE DESIGN - Maximize your workspace with a sleek 90° power connector that fits tight spots effortlessly.

This 7.4mm x 7.4mm right angle power adapter connector converts straight laptop power plugs into a 90-degree angle, optimizing space around your device. Compatible with a broad range of Dell Latitude, XPS, Vostro, and HP Pavilion, Probook, Elitebook, Envy, and Compaq Presario models, it features a durable, heat-resistant plastic build and an original chip for safe, efficient charging with leakage and short circuit protection. Lightweight and compact, it’s the perfect solution for professionals seeking a neat, reliable power connection.

Specifications

ASIN	B07H3S6DVV
Best Sellers Rank	#40,817 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #5,683 in Laptop Chargers & Adapters
Brand	Iwlikey
Color	1 Pack
Compatible Devices	Laptop
Connector Type	Coaxial
Customer Reviews	4.1 4.1 out of 5 stars (228)
Finish	Plastic
Item Weight	10 Grams
Manufacturer	Iwlikey
Mfr Part Number	90D 1Pack for HP7450 Connector
Model Number	90D 1Pack for HP7450 Connector
Number of Items	1
Number of Ports	1
Package Quantity	1
Power Plug Type	No Plug
UPC	760970715006
Unit Count	1.0 Count

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