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Pack of fifty metal and plastic DC gender changers converting 5.5 by 2.1 mm to 4.0 by 1.7 mm

eForChina

eForChina 50 DC Power Gender Changer 5.5x2.1mm to 4.0x1.7mm 12V 2.5A

SKU CH-5QM0-HPJ33

A pack of 50 DC gender changers converts 5.5x2.1 mm power plugs to 4.0x1.7 mm for 12 V, 2.5 A laptop chargers

  • Changer TypePower Adapter
  • Converts 5.5x2.1mm to 4.0x1.7mm for laptop charging
  • 12V 2.5A rating supports compatible power supplies
  • Metal and plastic construction ensures durability
  • 50-piece pack covers multiple devices or spares
  • Good transmission effect provides stable power delivery

50-Pack DC Power Gender Changer

This pack contains fifty adapters that convert a 5.5 x 2.1 mm female barrel jack into a 4.0 x 1.7 mm male plug. Each unit is built from metal and plastic and rated for 12 V at 2.5 A. They are intended for technicians or hobbyists who need to match legacy power supplies to newer laptop inputs in bulk.

Replaces Mismatched Barrel Connectors

Use these changers when a charger or power brick has a 5.5 x 2.1 mm output but the device requires a 4.0 x 1.7 mm input. The conversion eliminates the need to replace the entire power supply. The upgrade is worthwhile whenever the original supply meets the voltage and current requirements of the target device.

Suits Bulk Repair and Retrofit Work

The fifty-piece quantity suits repair shops, IT departments or makers who regularly adapt power leads for laptops and peripherals. Buyers who need a different barrel size, a higher current rating or a single unit for occasional use should look at other options.

Highlights

  • Converts 5.5x2.1mm to 4.0x1.7mm for laptop charging
  • 12V 2.5A rating supports compatible power supplies
  • Metal and plastic construction ensures durability
  • 50-piece pack covers multiple devices or spares
  • Good transmission effect provides stable power delivery

Specifications

Changer TypePower Adapter

Questions about this item

What size barrel jack does the female end of this 50-piece pack accept?

The female end accepts a 5.5 mm outer diameter and 2.1 mm inner diameter barrel plug, matching the common 12 V charger tip.

How do you connect the gender changer without damaging the centre pin?

Align the 1.7 mm male centre pin straight into the device socket before pushing the 4.0 mm outer barrel home; forcing it off-centre bends the pin.

When should the adapter be replaced if it sees daily laptop charging at 2.5 A?

Replace it if the metal sleeves loosen, the plastic housing cracks, or you measure voltage drop under load — signs the 2.5 A rating is no longer reliable.

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