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
Four black USB to 5.5x2.1mm step-up cables, 1M each

KEHIPI

KEHIPI 4-pack 5V to 9V USB step-up cable 5.5x2.1mm 1M

SKU CH-MMEV-34HNJ

A four-pack of USB 5V to 9V step-up cables with 5.5×2.1mm DC plugs, each 1M long, for powering low-current 9V devices from a 5V 2A source

  • Connection typeUsb
  • Connector detailsUsb
  • Build detailsCopper
  • Product color5 V to 9 V
  • Key featuresData Transfer
  • Steps 5 V USB power up to 9 V for compatible devices
  • Built-in smart IC chip protects against overcurrent and short circuits
  • 5×2.1 mm DC plug fits many routers, fans and speakers
  • Four cables in one pack for multiple low-power devices
  • One-metre copper cable gives flexible placement options

What this cable set does

The KEHIPI 4-pack converts a standard USB 5 V source to a regulated 9 V DC output through a 5.5 mm × 2.1 mm barrel connector. Each 1 m cable includes a built‑in smart IC that provides over‑current, over‑voltage, overload and short‑circuit protection for low‑power devices such as routers, mini fans, speakers or development boards.

What to verify before ordering

Your USB port or charger must be able to supply at least 2 A at 5 V, otherwise the step‑up converter may not start or could shut down under load. Confirm that the target device uses a 5.5 mm outer‑diameter, 2.1 mm inner‑diameter DC jack and that its power draw stays within the low‑current range this adapter is designed for.

Behaviour under sustained load

The integrated protection IC continuously monitors output and will limit or cut power if the connected equipment draws more current than the cable can safely deliver. This makes the adapter reliable for continuous operation of modest 9 V loads, but it is not intended for high‑current equipment that would exceed the converter’s thermal and current limits.

How it compares

Measured against everything we stock in USB Cords & Extension Cables, at today’s prices. Recalculated every night.

Price $16.99
Pricier than about 60% of the 15,227 comparable items (median $14.99).

Specifications

Product
Brand nameAITRIP
Product color5 V to 9 V
Ports & slots
Connection typeUsb
Connector detailsUsb
Size & build
Build detailsCopper

Questions about this item

Does the 4-pack include everything needed to power a 9V router, or must a 5V 2A USB source be bought separately?

The pack contains four 5.5 x 2.1 mm step-up cables; a USB port or charger capable of supplying 5V at 2A is required but not included.

When would I choose the 5.5 x 2.1 mm version over another plug size?

Choose this version only if the device’s power jack accepts a 5.5 mm outer and 2.1 mm inner diameter barrel connector.

What does the 9V output mean when the cable is connected to a typical Wi-Fi router?

The built-in boost converter raises the USB 5V input to a regulated 9V output, delivering up to 2A for compatible low-power routers.

More in USB Cords & Extension Cables

Similar items