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Product comparison · 2 power adapters & inverters

Lenovo 4X21U28839 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
  • 12differ
  • 8identical
  • 16known for one product only

Key differences

The Lenovo 4X21U28839 power adapter/inverter Indoor has 40 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 (180 W vs 140 W). The Lenovo 4X21U28839 power adapter/inverter Indoor has 97.1 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 (147.5 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 63.6 mm more depth than the Lenovo 4X21U28839 power adapter/inverter Indoor (132.6 mm vs 69 mm). Output voltage: 36 V on the Lenovo 4X21U28839 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. Brand compatibility: Lenovo on the Lenovo 4X21U28839 power adapter/inverter Indoor, Any brand 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 power
    • 180 W
    • 140 W
  • Output voltage
    • 36 V
    • 5 - 28 V
  • Brand compatibility
    • Lenovo
    • Any brand
  • Width
    • 147.5 mm
    • 50.4 mm
  • Depth
    • 69 mm
    • 132.6 mm
  • Height
    • 22 mm
    • 31.6 mm
  • Weight
    • 510 g
    • 338 g
  • Package width
    • 240 mm
    • 180 mm

Side by side

Differences highlightedShow differences only
36 specifications
A

Lenovo

4X21U28839 power adapter/inverter Indoor

Model 4X21U28839

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
Features4 differ
PurposeLaptopLaptop
Power supply typeIndoorIndoor
Input voltage100 - 240 V100 - 240 V
Input frequency50 - 60 Hz50 - 60 Hz
Input currentKnown for one2.2 A
Output powerDiffers180 W140 W
Output voltageDiffers36 V5 - 28 V
Output current5 A5 A
USB Power Delivery revisionKnown for one3.1
Power protection featuresKnown for oneOver voltage, Over current, Overheating
Brand compatibilityDiffersLenovoAny brand
CompatibilityDiffersThinkPadMacBook 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 conditionsidentical
Operating temperature (T-T)0 - 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/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
WidthDiffers147.5 mm50.4 mm
DepthDiffers69 mm132.6 mm
HeightDiffers22 mm31.6 mm
WeightDiffers510 g338 g
Cable lengthKnown for one1 m
Packaging data4 differ
Package widthDiffers240 mm180 mm
Package depthDiffers145 mm122 mm
Package heightDiffers52 mm59 mm
Package weightDiffers630 g600 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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