We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular AC adapter brick with 4.5mm barrel plug and detachable power cord

iTekiro

iTekiro 150W 20V 7.5A AC Adapter 4.5mm Pin for Asus Q539 Q540 UM535 UX535 UX550

SKU CH-2THN-5M07Z

A 150 W, 20 V, 7.5 A AC adapter with a 4.5 mm pin tip, 6 ft AC and 6 ft DC cords, and worldwide 100–240 V input for compatible Asus laptops

  • Battery typeLithium-Ion
  • Power adapter voltage20 V
  • Power adapter current7.5A
  • Power adapter wattage150 W
  • Product typeAC Adapter
  • 150W output powers demanding Asus laptops
  • 20V 7.5A delivery matches original charger specs
  • 5mm centre-pin tip fits Q539 Q540 UM535 UX535 UX550
  • 100-240V input works worldwide without a converter
  • 6ft AC plus 6ft DC cords give extra reach

Replacement 150W AC Adapter

This 150W AC adapter delivers 20V at 7.5A through a 4.5 mm centre-pin connector. It is built for owners of compatible Asus laptops who need a new or spare power supply. The unit includes a 6 ft UL-listed AC cord and a 6 ft DC cord for flexible desk placement.

Replaces 120W and 150W Originals

The adapter substitutes the factory 120W or 150W charger without changing voltage or tip geometry. The upgrade is worthwhile when the original unit is lost, damaged or no longer holds a stable output under load.

Fits Compatible Asus Ultrabooks

The plug matches the 4.5 mm pin type used on listed Asus Q539, Q540, UM535, UX535 and UX550 models. Worldwide 100–240V input lets the same brick work abroad, while overload, short-circuit and over-temperature protection guard the laptop’s charging circuit.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $38.99
Pricier than about 70% of the 27,790 comparable items (median $30.99).

Specifications

Product
Product typeAC Adapter
Power
Battery typeLithium-Ion
Power adapter voltage20 V
Power adapter current7.5A
Power adapter wattage150 W

Questions about this item

What size plug tip does this 150W adapter use for the Asus Q539?

The adapter has a 4.5 mm diameter plug tip with a centre pin inside, matching the Asus Q539 charging port.

How do I connect the 6 ft AC cord and 6 ft DC cord without strain on the 4.5 mm pin?

Plug the 3-prong AC cord into the wall outlet first, then insert the 4.5 mm DC plug firmly into the laptop until the centre pin seats fully.

When should I replace the 150W 20V 7.5A adapter if the output becomes unstable?

Replace the unit if the 20V 7.5A output drops, the brick overheats, or the 4.5 mm tip shows wear that causes intermittent charging.

More in Laptop Chargers & Batteries

Similar items