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Black nylon-braided cable with USB-C female and 7.9x5.5mm DC male connectors

Lirealar

Lirealar USB-C to 7.9x5.5mm 100W PD Adapter Cable

SKU CH-SW2S-PMV11

Converts a USB-C PD charger into a 7.9×5.5 mm tip for Lenovo laptops up to 100 W

  • Product colorBlack
  • Charges up to 100W via USB-C PD
  • Converts USB-C to 7.9x5.5mm Lenovo tip
  • Built-in PD and E-Mark chips for handshake
  • Nylon-braided cable with tinned copper conductors
  • Works with Lenovo 90W and below 7.9mm models

USB-C PD adapter cable for Lenovo

This cable converts a USB-C Power Delivery charger into a 7.9x5.5mm DC tip for compatible Lenovo laptops. It supports up to 100W input and contains built-in PD and E-Mark chips for power negotiation. The nylon-braided jacket protects tinned copper conductors inside a gold-plated shell. It is a new accessory for legacy ThinkPad power requirements.

Suits owners of listed ThinkPad models

Buyers with a 90W or lower Lenovo laptop using the 7.9x5.5mm barrel connector can charge from a modern USB-C PD brick. The adapter requires a charger rated at or above the laptop's native input, such as the 19V 4.74A 90W example. Users needing a slimmer tip, a different voltage profile, or simultaneous data transfer should look elsewhere.

Handles 90W and 100W PD sources

The cable comfortably powers ThinkPad T60, T61, T420 and T430 systems when paired with a sufficient USB-C charger. Headroom exists for any 90W-or-below unit matching the 7.9x5.5mm specification. It runs out if the PD source falls short of the laptop's rated wattage or if the barrel size does not match exactly.

How it compares

Measured against everything we stock in Jumper & Adapter Power Cords, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 60% of the 402 comparable items (median $13.99).

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Specifications

Product
Product colorBlack

Questions about this item

Which USB-C charger wattage do I need to power a 90 W Lenovo laptop through this adapter?

Use a USB-C Power Delivery charger rated at 90 W or higher; the cable supports up to 100 W input so the charger must meet or exceed the laptop’s 90 W requirement.

Will this cable fit the 7.9 × 5.5 mm barrel jack on my ThinkPad T60 or T420?

Yes, the male DC tip is a 7.9 × 5.5 mm round connector compatible with ThinkPad T60, T61, T420, T430 and other Lenovo models using that barrel size.

How can I confirm the adapter is negotiating the correct power after I plug it in?

The built-in PD inducing and E-Mark chips handle negotiation automatically; verify the laptop shows it is charging at the expected wattage (for example 19 V 4.74 A for a 90 W unit).

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