HZPOWEN 12V 3.33A AC Adapter for Dell Monitors ADP-40DD B

Power your compatible Dell LED/LCD monitors with this HZPOWEN 12V 3.33A AC adapter, a tested replacement for ADP-40DD B and related OEM power supplies.

If your Dell monitor needs a reliable external power brick, this HZPOWEN adapter delivers the correct 12V 3.33A output and wide 100–240V input range to replace original ADP-40DD B / PA-1041 series units. Built and tested to meet CE, FCC, and RoHS standards, it’s designed to match OEM electrical specs and keep displays like the S2340, S2440, S2216 and many other 21.5"–27" models running without interruption.

Which Dell monitors will this adapter work with?

This adapter supports a long list of Dell LED-lit and IPS LCD monitors commonly used in home and office settings. It’s compatible with multiple model lines across 21.5" to 27" sizes where the original used a 12V 3.33A supply.

• Supported families: S2216, S2218, S2230, S2240, S2316, S2318, S2330, S2340, S2440, S2740 (and variants)
• Models: S2340M, S2340Mc, S2440L, S2440Lb, S2740L, S2240T, S2240M, S2318M, S2216H, and more
• Fits monitors originally paired with ADP-40DD B, PA-1041-71 and related part numbers

How safe and reliable is the HZPOWEN replacement adapter?

HZPOWEN ensures this adapter is manufactured and sample-tested to meet safety and environmental certifications, reducing risk when replacing aged or lost OEM bricks. It uses the same voltage and amperage ratings required by the supported monitors.

• Certifications: CE, FCC, RoHS to meet common regulatory standards
• Input: 100–240V 50/60Hz for global compatibility
• Output: stable 12V DC at 3.33A to match original monitor requirements
• Factory-tested to align with OEM electrical performance

What connector and cord details should I check before buying?

Confirm the power barrel size and the monitor’s power jack polarity match the adapter. Also check if your setup requires a specific regional mains cord or an inline fuse for added protection.

• Standard external power brick with a monitor-facing DC barrel connector
• Polarity and barrel diameter should match your original Dell monitor plug
• Comes as the adapter body only; verify whether a local mains cable is included when ordering
• Suitable for global 100–240V outlets — use appropriate plug or cable for your region

How easy is it to replace my monitor’s original power supply?

Replacing the power brick is straightforward: unplug the old adapter from the monitor and wall outlet, then connect the HZPOWEN unit the same way. No installation or configuration is required, and the correct electrical match prevents compatibility problems.

• Plug-and-play replacement—no tools or software needed
• Works immediately once connected to the correct monitor jack and mains outlet
• Ideal when the original adapter is lost, damaged, or intermittently failing

Who is this for: This HZPOWEN 12V 3.33A AC adapter is made for owners of Dell 21.5"–27" LED/LCD monitors who need an exact-voltage replacement for ADP-40DD B or PA-1041-series power supplies. It suits home users, small-office setups, IT technicians swapping out faulty bricks, and anyone seeking a certified, factory-tested alternative to older OEM power adapters.