Apple has released a US-only update to boost compatibility between Macs and some wireless wide area network (WWAN) products.

The WWAN Support Update 1.0 provides support for the following US WWAN products:

Available on the Cingular network:
- Novatel Merlin XU870 ExpressCard (HSDPA)

Available on the Sprint network:
- Novatel Wireless Merlin EX720 Express Card (EVDO Rev. A)
- Novatel Wireless Ovation U720 USB Modem (USB Adaptor, EVDO Rev. A)

Available on the Verizon network:
- Novatel XV620 ExpressCard (EVDO Rev. 0)
- Novatel V740 ExpressCard (EVDO Rev. A)
- Novatel Wireless Ovation U720 (USB Adaptor, EVDO Rev. A)

The 350k download is available now.