AC Adapters for PowerBook Duos may all look alike, but they're not all the same. Apple just introduced a new unit, with item number M4174LL/B, which works with the new Duo 280 and 280c models, as well as all previous models; it replaces M2781LL/A, introduced earlier this month, which also works with the new and old models. The M4174LL/A adapter works only with the Duo 210, 230, 250, and 270c models. The new item number for the adapter that works with all Duos was probably adopted in order to avoid confusion. Nice try. [MHA]
Improve Apple Services with AirPort Base Stations
You can make iChat file transfers, iDisk, and Back to My Mac work better by turning on a setting with Apple AirPort base stations released starting in 2003. Launch AirPort Utility, select your base station, click Manual Setup, choose the Internet view, and click the NAT tab. Check the Enable NAT Port Mapping Protocol (NAT-PMP) box, and click Update. NAT-PMP lets your Mac OS X computer give Apple information to connect back into a network that's otherwise unreachable from the rest of the Internet. This speeds updates and makes connections work better for services run by Apple.