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Product comparison · 2 power adapters & inverters

Lenovo 4X21U28814 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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  • 16specifications compared
  • 9differ
  • 7identical
  • 20known for one product only

Key differences

The Lenovo 4X21U28814 power adapter/inverter Indoor has 69.6 mm more width 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 (120 mm vs 50.4 mm). 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 70.1 mm more depth than the Lenovo 4X21U28814 power adapter/inverter Indoor (132.6 mm vs 62.5 mm). 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 9.6 mm more height than the Lenovo 4X21U28814 power adapter/inverter Indoor (31.6 mm vs 22 mm). Input voltage: 115 - 230 V on the Lenovo 4X21U28814 power adapter/inverter Indoor, 100 - 240 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. Input frequency: 50/60 Hz on the Lenovo 4X21U28814 power adapter/inverter Indoor, 50 - 60 Hz 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.

  • Input voltage
    • 115 - 230 V
    • 100 - 240 V
  • Input frequency
    • 50/60 Hz
    • 50 - 60 Hz
  • Output voltage
    • 28 V
    • 5 - 28 V
  • Brand compatibility
    • Lenovo
    • Any brand
  • Width
    • 120 mm
    • 50.4 mm
  • Depth
    • 62.5 mm
    • 132.6 mm
  • Height
    • 22 mm
    • 31.6 mm
  • Weight
    • 500 g
    • 338 g

Side by side

Differences highlightedShow differences only
36 specifications
A

Lenovo

4X21U28814 power adapter/inverter Indoor

Model 4X21U28814

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
Features5 differ
Input voltageDiffers115 - 230 V100 - 240 V
Input frequencyDiffers50/60 Hz50 - 60 Hz
Input currentKnown for one2.2 A
Output voltageDiffers28 V5 - 28 V
USB Power Delivery revisionKnown for one3.1
Power protection featuresKnown for oneOver voltage, Over current, Overheating
Brand compatibilityDiffersLenovoAny brand
CompatibilityDiffersThinkPad P16v Gen 3 (Intel) ThinkPad T1g Gen 8MacBook M3/M4/M5 Pro/Max, Dell Pro/Plus/Premium
Performanceidentical
USB connectivityKnown for oneYes
USB connector typeKnown for oneUSB Type-C
Operational conditionsidentical
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/CB/CE EMC/CE Doc/PSE/IRAM/NOM/DOE,ErP,CoC/Nrcan/FCC and ICES/Mexico MEPS/PSB/CCC/CECP/KC,MSIP/Korea MEPS/RCM/Australia safety/NZ Doc/BSMI/EAC/Serbia/Ukraine/SII/NRCS/SABS/SIRIM/ISC/SONCAP/KEBS/STZ/INSM/KUCAS/BIS/Morocco/SEC/TISI
Weight & dimensions4 differ
WidthDiffers120 mm50.4 mm
DepthDiffers62.5 mm132.6 mm
HeightDiffers22 mm31.6 mm
WeightDiffers500 g338 g
Cable lengthKnown for one1 m
Packaging dataidentical
Package widthKnown for one180 mm
Package depthKnown for one122 mm
Package heightKnown for one59 mm
Package weightKnown for one600 g
Package typeKnown for oneBox
Packaging contentidentical
Included power plug typesKnown for oneUS
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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