USB Mass Storage for Palm OS
Palm Card Reader

Export SD/MMC cards as logical disks via USB and Bluetooth, the fastest USB Mass Storage solution for Palm OS

Treo/Centro Utility Belt - a pack of USB Modem and Card Reader for $29.95. Tethering and USB Mass Storage for Palm in one pack. Buy

Android tethering app

EasyTether for BlackBerry
Tethering solution for BlackBerry

USB Modem allows you to use Treo 600, Treo 650, Treo 680, Treo 700p, Treo 755p and Centro smartphones as a USB modem for connecting a desktop or notebook computer to Internet. To surf the Internet from your PC you will need only a USB cable and a Treo with GPRS/EDGE service or CDMA 1x/EvDO data plan. However, for more reliable work with Sprint or Verizon carriers you may need to purchase their tethering plan.

Please note that if USB Modem stops working after you have upgraded to Mac OS 10.5.5, you should try to delete the existing USB Modem-related network port in System Preferences, then create it from scratch as described in the manual.


  • Tethering for Treo 600, Treo 650, Treo 680, Treo 700p, Treo 755p and Centro smartphones
  • Tethering for Windows 2000/XP/Vista, Mac OS X and Linux operating systems
  • Support for USB and Bluetooth connectivity
  • Tethering is done in background mode so it is possible to make outgoing voice calls or perform other activity on the Treo without disabling the modem mode (if supported by the phone)
  • Small memory footprint (30 KB)

USB Modem User's Guide

Volume discounts

  • 2 - 5 copies : 20% OFF
  • 6 - 10 copies : 30% OFF
  • 11 - 20 copies : 40% OFF
  • 21+ copies : 50% OFF

Frequently asked questions on USB Modem (Palm tethering guide)

What is new in version 1.60

  • Tethering support for palm Centro (GSM version)

What is new in version 1.59

  • Tethering support for palm Centro
  • Tethering support for Windows Vista 64-bit

What is new in version 1.58

  • Fixed the built-in DUN suppression on Treo 680 and Treo 755p

Please try the demo before purchasing the software to see if it is compatible with your cellular operator environment.

Disclaimer. We will accept no responsibility for the use or misuse of our software, for any damage that may be caused by the software or the software possible lack of suitability. We are not responsible for any charges you may incur from your cellular provider as a result of using USB Modem.

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Free trial download

Supported devices

  • palm Centro
  • palm Treo 755p
  • palm Treo 700p
  • palm Treo 680
  • palmOne Treo 650
  • palmOne Treo 600

USB Modem