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Product comparison · 2 power adapters & inverters

Lenovo 4X21L18251 power adapter/inverter Indoor vs StarTech.com 140W USB-C Laptop Charger with 4ft (1.2m) Tethered USB-C Cable, GaN Power Adapter Brick for MacBook M3/M4/M5 Pro/Max, Dell Pro/Plus/Premium

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  • 20specifications compared
  • 15differ
  • 5identical
  • 15known for one product only

Key differences

The StarTech.com 140W USB-C Laptop Charger with 4ft (1.2m) Tethered USB-C Cable, GaN Power Adapter Brick for MacBook M3/M4/M5 Pro/Max, Dell Pro/Plus/Premium has 0.7 A more input current than the Lenovo 4X21L18251 power adapter/inverter Indoor (2.2 A vs 1.5 A). The Lenovo 4X21L18251 power adapter/inverter Indoor has 160 W more output power than the StarTech.com 140W USB-C Laptop Charger with 4ft (1.2m) Tethered USB-C Cable, GaN Power Adapter Brick for MacBook M3/M4/M5 Pro/Max, Dell Pro/Plus/Premium (300 W vs 140 W). The Lenovo 4X21L18251 power adapter/inverter Indoor has 10 A more output current than the StarTech.com 140W USB-C Laptop Charger with 4ft (1.2m) Tethered USB-C Cable, GaN Power Adapter Brick for MacBook M3/M4/M5 Pro/Max, Dell Pro/Plus/Premium (15 A vs 5 A). Purpose: PC on the Lenovo 4X21L18251 power adapter/inverter Indoor, Laptop on the StarTech.com 140W USB-C Laptop Charger with 4ft (1.2m) Tethered USB-C Cable, GaN Power Adapter Brick for MacBook M3/M4/M5 Pro/Max, Dell Pro/Plus/Premium. Output voltage: 20 V on the Lenovo 4X21L18251 power adapter/inverter Indoor, 5 - 28 V on the StarTech.com 140W USB-C Laptop Charger with 4ft (1.2m) Tethered USB-C Cable, GaN Power Adapter Brick for MacBook M3/M4/M5 Pro/Max, Dell Pro/Plus/Premium.

  • Purpose
    • PC
    • Laptop
  • Input current
    • 1.5 A
    • 2.2 A
  • Output power
    • 300 W
    • 140 W
  • Output voltage
    • 20 V
    • 5 - 28 V
  • Output current
    • 15 A
    • 5 A
  • Brand compatibility
    • Lenovo
    • Any brand
  • Operating temperature (T-T)
    • 5 - 40 °C
    • 0 - 40 °C
  • Width
    • 200 mm
    • 50.4 mm

Side by side

Differences highlightedShow differences only
35 specifications
A

Lenovo

4X21L18251 power adapter/inverter Indoor

Model 4X21L18251

View product
B

StarTech.com

140W USB-C Laptop Charger with 4ft (1.2m) Tethered USB-C Cable, GaN Power Adapter Brick for MacBook M3/M4/M5 Pro/Max, Dell Pro/Plus/Premium

Model 1140LE-USB-C-CHARGER

View product
Features6 differ
PurposeDiffersPCLaptop
Power supply typeIndoorIndoor
Input voltage100 - 240 V100 - 240 V
Input frequency50 - 60 Hz50 - 60 Hz
Input currentDiffers1.5 A2.2 A
Output powerDiffers300 W140 W
Output voltageDiffers20 V5 - 28 V
Output currentDiffers15 A5 A
USB Power Delivery revisionKnown for one3.1
Power protection featuresKnown for oneOver voltage, Over current, Overheating
Brand compatibilityDiffersLenovoAny brand
CompatibilityKnown for oneMacBook M3/M4/M5 Pro/Max, Dell Pro/Plus/Premium
Performanceidentical
USB connectivityKnown for oneYes
USB connector typeKnown for oneUSB Type-C
Designidentical
Product colourBlackBlack
Operational conditions1 differ
Operating temperature (T-T)Differs5 - 40 °C0 - 40 °C
Storage temperature (T-T)Known for one-20 - 60 °C
Operating relative humidity (H-H)Known for one8 - 80%
Certificatesidentical
Compliance certificatesKnown for oneCE, Federal Communications Commission (FCC), PSE
CertificationKnown for oneUL/CSA/IEC/South Korea Safety/ES's MEPS/PSE(DEN-AN)/GEMS/NEMKO/SEMKO/DEMKO/SETI(FIMKO)/CCC/PSB/NOM/EAC/IRAM/Croatia EMC/GS/CECP/SASO/Ukarine/Serbia/Montenegro/NZ SDOC/SII/NRCan/NOM-029/BIS
Weight & dimensions4 differ
WidthDiffers200 mm50.4 mm
DepthDiffers100 mm132.6 mm
HeightDiffers25.4 mm31.6 mm
WeightDiffers1.16 kg338 g
Packaging data4 differ
Package widthDiffers385 mm180 mm
Package depthDiffers150 mm122 mm
Package heightDiffers58 mm59 mm
Package weightDiffers1.29 kg600 g
Package typeKnown for oneBox
Packaging contentidentical
Included power plug typesKnown for oneUS
Quantity per pack1 pc(s)1 pc(s)
Logistics dataidentical
Master (outer) case widthKnown for one380 mm
Master (outer) case lengthKnown for one315 mm
Master (outer) case heightKnown for one315 mm
Products per master (outer) caseKnown for one20 pc(s)

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